CN1311942C - Method and apparatus for manufacturing tin granule - Google Patents
Method and apparatus for manufacturing tin granule Download PDFInfo
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- CN1311942C CN1311942C CNB200410068082XA CN200410068082A CN1311942C CN 1311942 C CN1311942 C CN 1311942C CN B200410068082X A CNB200410068082X A CN B200410068082XA CN 200410068082 A CN200410068082 A CN 200410068082A CN 1311942 C CN1311942 C CN 1311942C
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Abstract
The present invention relates to a method and a device for producing tin granules, which solves the deficiencies that in the process of producing the existing tin granules, the tin granules need cleaning, the surfaces of the tin granules are easy to oxygenize, slag patches appear, etc. The present invention has the solving technical scheme that after tin slabs are preheated, the tin slabs enter a flowing furnace through a delivery roller, the temperature of the flowing furnace of the tin slabs is 245 DEG C to 265 DEG C, a communicating pipe 1< # > is used for connecting the flowing furnace of the tin slabs and a tin liquor maintaining furnace and is communicated with seepages from the bottom. A liquor surface in the flowing furnace is higher 80mm to 300mm than a liquor surface in the maintaining furnace, temperature in the maintaining furnace is 245 DEG C to 265 DEG C, and the volume of the tin liquor maintaining furnace is 30% to 80% of the volume of the flowing furnace. A 2< # > communicating pipe is used for connecting the tin liquor maintaining furnace and a granulation furnace and adopts a mode which is used for taking liquor from the bottom. The section area of the communicating pipe 1< # > is 120% to 160% of the section area of the communicating pipe 2< # >, the liquor surface in the maintaining furnace is higher 0 to 50mm than the liquor surface in the granulation furnace, the temperature of tin liquor in the granulation furnace is 245 DEG C to 265 DEG C, and the volume of the granulation furnace is 30% to 80% of the volume of the maintaining furnace. The tin granules enter a collecting box through a lifting machine, a hydro-extracting device and a drying machine. The tin granules manufactured by using the present invention has advantages of smooth surfaces, circularity, integration, compactness, uniform granules, no pollution, no air holes, no loose or slag patches in the tin granules, simple production process and low energy consumption, and the present.
Description
Technical field
The invention belongs to the metallic particles processing technique field, relate to a kind of processing method and equipment of metallic particles, particularly a kind of method and apparatus that is used to make the production tin grain of ferrostan.
Background technology
The electrotinning product has characteristics such as anti-corrosion, nontoxic, has been widely used in industries such as Food ﹠ Drink processing.Present domestic more than 10 the electrotinning production line that built up built up more than 140 electrotinning production line abroad, and the yearly productive capacity of electrotinning product is above 20,000,000 tons.When making ferrostan, plating is a critical process, and when steel plate was electroplated, the main employing of replenishing of tin ion added tin slab or tin grain in the plating bath, by tin slab or tin grain subsequently in plating bath electrolysis realize.Exist inconvenient operation, metallic tin to be difficult for electrolysis and the uneven deficiency of solution composition by adding the method that tin slab replenishes tin ion in the plating bath, cause that coating uniformity is poor, quality of coating is low.Therefore when producing senior ferrostan, the main method of adding the tin grain that adopts of replenishing of tin ion realizes in the plating bath.Replenish tin ion by the tin grain that in plating bath, adds any surface finish, stable components, non-oxidation, no slag inclusion, can obtain the good tin coating of uniformity and corrosion resistance, have work efficiency height, advantage such as easy to operate in addition.Therefore, electrotinning production line newly-built or reconstruction most employing the in countries in the world added the tin grain and replaced and added the tin slab method in the past and replenish tin ion in the plating bath.
About the processing method of metallic particles mainly contains the molten drop method, the method for splashing and mechanical processing method.The flow process that the application machine processing method is made the tin grain is: tin slab → fusing → cast → hot pressing → punching press → tin grain → packing.Its technical maturity can be produced qualified products.But the subject matter that exists is: 1. complex technical process, and manufacturing procedure is many; 2. tin grain recovery rate is low, less than 78%; 3. energy consumption height, the leftover pieces more than 22% need return refuse, consume energy more than 22% more; 4. pressing equipment is huge, and maintenance capacity is big, and labor productivity is low; 5. the equipment construction investment is high; 6. finished product tin grain there is pollution.The molten drop method and the method for splashing mainly comprise operations such as metal molten, instillation and condensation.
A kind of method that adopts molten drop method processing metal grains is disclosed in the U.S. Pat 3888956, in the method, the molten stream that makes motlten metal falls towards the fixed part of a level, the fragmentation owing to the kinetic energy of itself when melt clashes into these parts, form irregular molten drop, these molten drops are toward the top of above-mentioned parts and outwards motion, fall into the solution that is arranged in the cooling medium below company headquarters of the institute part then.Adopt this known method can make metallic particles, but this method have a lot of shortcoming and defect.Show that mainly therefore formed droplet size can not control particle size and particle size distribution effectively from very little molten drop to sizable molten drop when motlten metal clashed into above-mentioned parts.A kind of preparation method of tin particle for electroplating steel sheet with tin is disclosed among the Chinese invention patent CN1127686, in this method, after the fusing of metal tin slab, import the jar that instils by discharging opening, tin liquor splashes in the condensation bath through instiling mouth, oil, the double-deck cooling fluid of water are housed in the condensation bath, and the molten tin liquor then splashes into the upper strata oil bath earlier, enters lower floor's water-bath cooled and solidified again and forms graininess tin grain.Can process the uniform tin grain of size although use this method, the tin grain will carry out cleaning by degreasing and oven dry is handled, and has both increased production process, has increased energy consumption again, and degreasing agent is contaminated environment also.And also there is tin liquor instillation temperature height in this method, reaches 280 ℃～300 ℃, causes tin grain surface easily to produce scruff and produces the deficiency that the energy consumption of tin grain increases.Chinese invention patent CN1257767 also discloses a kind of preparation method of tin grain, is that the patent of invention publication number is the improvement invention of CN1127686, is primarily characterized in that the improvement of its condensation operation.The molten tin liquor splashes into that cooled and solidified forms the tin grain in the water-bath with uniform temperature.The present invention is that CN1127686 compares with the patent of invention publication number, has work simplification, and production cost obviously reduces, but the present invention only utilizes the waste heat dehydration, has cancelled oven dry, the easily oxidation jaundice of tin grain surface, and tin grain surface is prone to slag inclusion, influences the use of tin grain in pot.The zinc granule processing method that is used to make plated steel sheet is disclosed among the Chinese invention patent CN1438085, this method be with zinc ingot metal after melting furnace fusing, enter holding furnace, holding furnace adopts heating muff heat supply in the pottery, uses N during the insulation of zinc liquid
2Or Ar
2Protection.In the holding furnace bottom, be provided with the through hole more than 1 or 1, through hole directly links to each other with batcher, the zinc liquid batcher of flowing through, through splashing into behind the drip nozzle on the graphite chill roll, 50%～80% of chill roll body of roll area is immersed in the condensation water tank.Because the quick conductive of chill roll, zinc liquid becomes zinc granule rapidly, and under centrifugal action, zinc granule is thrown in the zinc granule collecting box.With zinc granule any surface finish, rounding, densification, the uniform particles, pollution-free that the present invention makes, the inner pore-free of zinc granule, loose and be mingled with does not need to carry out surface clean and oven dry is handled, and it is stand-by directly to pack warehouse-in.But with this method processing tin grain, scruff is many, and recovery rate is low, and the granulation ability is low, and the easily oxidation of tin grain surface, color is brightless even be prone to loose and slag inclusion.
Summary of the invention
The object of the invention provides tin grain production method and the equipment that ferrostan is made in defectives such as a kind of efficient height, equipment are simple, easy to operate, tin grain any surface finish, non-oxidation, slag inclusion, crackle and low being used to of production cost.
The present invention seeks to be achieved through the following technical solutions: a kind of method of producing the tin grain, at first use heating tube preheating tin slab, 100 ℃～160 ℃ of tin slab preheat temperatures, tin slab preheating section length is 1.0m～5.0m.Tin slab is melted 245 ℃～265 ℃ of tin slab melting furnace temperature with electric induction furnace, resistance furnace or heating tube.Open a through hole on melting furnace top, install 1 in the through hole
#Communicating pipe, described 1
#Communicating pipe is the U-shaped pipe that the length head is arranged, and the brachycephaly pipe end stretches into melting furnace tin liquor bottom, and a long pipe end stretches into the tin liquor bottom of holding furnace, and the liquid level of melting furnace need be higher than the liquid level of holding furnace, and tin liquor is by 1
#Communicating pipe enters the tin liquor holding furnace by melting furnace, and temperature is controlled at 245 ℃～265 ℃ in the tin liquor holding furnace.Above the tin liquor holding furnace, open a through hole, install 2 in the through hole
#Communicating pipe, described 2
#Communicating pipe is a L shaped pipe, and an end stretches into holding furnace tin liquor bottom vertically downward, and other end level is communicated with granulating furnace, and the liquid level in the holding furnace is higher than the liquid level in the granulating furnace or maintains an equal level, and tin liquor is by 2
#Communicating pipe enters granulating furnace by holding furnace, and the tin liquor temperature in the granulating furnace is controlled at 245 ℃～265 ℃.Bottom granulating furnace, be provided with the through hole more than 1 or 1, make tin liquor flow through through hole and splash into and become the tin grain in the elevator that places water tank.The tin grain behind watershed, dryer, enters collecting box by elevator.Cooling water temperature in the water tank is 20 ℃～50 ℃, and the dryer temperature is 60 ℃～80 ℃.The tin grain surface temperature that enters tin grain collecting box is 60 ℃～80 ℃, tin grain any surface finish, rounding, densification, uniform particles, pollution-free, tin intragranular portion pore-free, loose and slag inclusion.
A kind of equipment of producing the tin grain is made up of heating and melting device, prilling granulator and gathering-device.The heating and melting device is the hollow cavity structure, crust of the device is a heat-insulation layer, be mounted with preheating furnace in the tin slab porch, the preheating furnace bottom is provided with flame retardant coating, is equipped with conveying roller on the flame retardant coating, is provided with several heating tubes above conveying roller, be connected with melting furnace by chute at the conveying roller end, be provided with holding furnace at the melting furnace side-lower, open a through hole on melting furnace top, install 1 in the through hole
#Communicating pipe, described 1
#Communicating pipe is the U-shaped pipe that the length head is arranged, and the brachycephaly pipe end stretches into the melting furnace bottom, and a long pipe end stretches into the bottom of holding furnace, in heating and melting device arranged outside granulating furnace is arranged, and opens a through hole above the tin liquor holding furnace, installs 2 in the through hole
#Communicating pipe, described 2
#Communicating pipe is a L shaped pipe, one end stretches into the holding furnace bottom vertically downward, other end level is communicated with granulating furnace, in the granulating furnace bottom, be provided with the through hole more than 1 or 1, be provided with water tank below granulating furnace, the elevator lower end is stretched into water tank and is positioned at the granulating furnace below, and the elevator upper end is connected successively with watershed, dryer, collecting box.
Tin liquor holding furnace volume is 30%～80% of a melting furnace volume.1
#Communicating pipe makes with stainless steel, graphite or pottery.The interior heating muff heat supply of pottery that tin liquor holding furnace employing intensity height, heat transfer efficiency height and electrical insulation capability are good, the interior heating muff heat supply of employing pottery also have cutting down the consumption of energy, reduce the loss of tin, improve advantages such as temperature-controlled precision and security height.The granulating furnace volume is 30%～80% of a holding furnace volume.2
#Communicating pipe makes with stainless steel, graphite or pottery.
Liquid level in the melting furnace of the present invention can guarantee that than the high 80mm～300mm of the liquid level in the holding furnace tin liquor in the melting furnace can enter in the holding furnace apace.Liquid level in the holding furnace is than the high 0～50mm of the liquid level in the granulating furnace, can guarantee that the tin liquor in the holding furnace steadily enters granulating furnace, tin liquor enters granulating furnace reposefully and helps tin liquor and flow out and enter cooling water tank from the through hole of granulating furnace bottom reposefully, can guarantee that the tin particle size is uniform and stable, also help tin grain any surface finish.Tin liquor enters holding furnace from melting furnace, and melting furnace bottom tin liquor is through 1
#Communicating pipe flows into holding furnace, and the impurity and the scruff that can reduce significantly in the melting furnace flow into holding furnace, improve the degree of purity of holding furnace tin liquor.Holding furnace bottom tin liquor is through 2
#Communicating pipe enters granulating furnace, has improved the degree of purity of overflowing liquid, and the raising of tin liquor degree of purity in the granulating furnace can increase substantially dropping liquid efficient, can also prevent that slag inclusion from appearring in tin grain surface.The present invention 1
#The cross-sectional area of communicating pipe is 2
#Communicating pipe cross-sectional area 120%～160%, help the stable of tin liquor in the granulating furnace, help obtaining the stable tin grain of size and dimension.
The present invention is compared with the prior art, and has following advantage:
1. tin slab preheating of the present invention, fusing, tin liquor insulation, tin grain are shaped, cool off, dry and collect and once finish, and technology is simple, the production efficiency height.
2. melting furnace bottom tin liquor is through 1
#Communicating pipe flows into holding furnace, can reduce the impurity and the scruff that flow to holding furnace significantly, has improved the degree of purity of tin liquor in the holding furnace.
3. holding furnace bottom tin liquor is through 2
#Communicating pipe enters granulating furnace, improved the degree of purity of overflowing liquid, the raising of tin liquor degree of purity can improve dropping liquid efficient 12%～18%, can also prevent that slag inclusion from appearring in tin grain surface, help obtaining bright and clean, flawless, no slag inclusion and the uniform and stable tin grain of size.
4. adopt the present invention can realize continuous addition of tin ingot, continuous melting tin slab, production tin liquor and produce the tin grain continuously continuously.
5. make tin grain recovery rate height with the present invention, recovery rate is greater than 98%.
6. it is low to make the tin liquor instillation temperature of tin grain with the present invention, has only 245 ℃～265 ℃, and the energy consumption that causes tin grain surface to be difficult for producing scruff and producing the tin grain descends, and the energy consumption of producing the tin grain is 0.055kw.h/kg～0.085kw.h/kg.
Description of drawings
Accompanying drawing is that the present invention produces tin grain equipment schematic diagram.
Among the figure: 1---flame retardant coating, 2---heating tube, 3---conveying roller, 4---heat-insulation layer, 5---tin slab, 6---melting furnace, 7---tin liquor, 8---1
#Communicating pipe, 9---holding furnace, 10---2
#Communicating pipe 11---granulating furnace, 12---the tin grain, 13---water tank, 14---elevator, 15---watershed 16---dryer, 17---collecting box.
The specific embodiment
Embodiment 1, and the invention will be further described below in conjunction with embodiment:
A kind of equipment of producing the tin grain is made up of heating and melting device, prilling granulator and gathering-device.The heating and melting device is the hollow cavity structure, crust of the device is a heat-insulation layer 4, be mounted with preheating furnace in the tin slab porch, the preheating furnace bottom is provided with flame retardant coating 1, is equipped with conveying roller 3 on the flame retardant coating, is provided with several heating tubes 2 above conveying roller, be connected with melting furnace 6 by chute at the conveying roller end, be provided with holding furnace 9 at melting furnace 6 side-lowers, open a through hole, install 1 in the through hole on melting furnace 6 tops
#Communicating pipe 8 is with 1
#Communicating pipe links to each other tin slab melting furnace 6 with tin liquor holding furnace 9, in heating and melting device arranged outside granulating furnace 11 is arranged, and opens a through hole above the tin liquor holding furnace, installs 2 in the through hole
#Communicating pipe 10 is with 2
#Communicating pipe 10 links to each other tin liquor holding furnace 9 with granulating furnace 11, in the granulating furnace bottom, be provided with 25 through holes, below granulating furnace, be provided with water tank 13, elevator 14 lower ends are stretched into water tank and are positioned at the granulating furnace below, and the elevator upper end is connected successively with watershed 15, dryer 16, collecting box 17.
Production method is: at first tin slab 5 is placed in the long preheating furnace of 3.0m, the ceramic heat pipe heating that preheating furnace is 16.2KW with 6 general powers, 128 ℃ of tin slab preheat temperatures, enter melting furnace 6 then, melting furnace is the ceramic heat pipe heating that 6 general powers of employing are 18KW, tin liquor melting furnace temperature is 258 ℃, after the tin liquor fusing, by 1 of internal diameter φ 25mm
# Stainless steel tube 8 enters holding furnace 9, and tin liquor holding furnace volume is 45% of a melting furnace volume.The ceramic heat pipe heating that holding furnace is 6KW with 3 general powers, the liquid level in the melting furnace is than the high 130mm of the liquid level in the holding furnace, and temperature is 261 ℃ in holding furnace, and tin liquor 7 is by 2 of φ 22mm
# Stainless steel tube 10 enters granulating furnace 11, and the granulating furnace volume is 45% of a holding furnace volume.Liquid level in the holding furnace is than the high 12mm of the liquid level in the granulating furnace, and when the tin liquor temperature of granulating furnace reached 260 ℃, tin liquor directly flowed out from the through hole of granulating furnace bottom, and bottom through-hole quantity is 25, and borne tin droplets is gone into the bucket elevator 14 in the water tank 13.Tin grain 12 behind watershed 15, dryer 16, enters collecting box 17 by bucket elevator.Cooling water temperature in the water tank is 30 ℃, and the dryer temperature is 70 ℃.The tin grain surface temperature that enters tin grain collecting box is 70 ℃.Tin grain particle size φ 3mm～φ 6mm, tin grain process velocity is 530kg/h, the energy consumption of processing tin grain is 0.076kw.h/kg.Out-of-roundness＜the 0.12mm of tin grain, tin grain any surface finish, densification, uniform particles, pollution-free, tin intragranular portion pore-free, loose and slag inclusion.
At first tin slab 5 is placed in the long preheating furnace of 4.0m, the ceramic heat pipe heating that preheating furnace is 17.5KW with 7 general powers, 145 ℃ of tin slab preheat temperatures, enter melting furnace 6 then, it is the resistance furnace heating of 25KW that melting furnace adopts power, tin liquor melting furnace temperature is 260 ℃, after the tin liquor fusing, by 1 of internal diameter φ 28mm
#Earthenware 8 enters holding furnace 9, and tin liquor holding furnace volume is 65% of a melting furnace volume.Holding furnace is with the ceramic heat pipe heating that is 6KW of 3 general powers, and the liquid level in the melting furnace is than the high 240mm of the liquid level in the holding furnace, and when the holding furnace temperature is 262 ℃, tin liquor is by 2 of φ 23mm
#Earthenware 10 enters granulating furnace 11, and the granulating furnace volume is 70% of a holding furnace volume.Liquid level in the holding furnace is than the high 30mm of the liquid level in the granulating furnace, and when the tin liquor temperature of granulating furnace reached 261 ℃, tin liquor directly flowed out from the through hole of granulating furnace bottom, and bottom through-hole quantity is 35, and borne tin droplets is gone into the bucket elevator 14 in the water tank 13.The tin grain behind watershed 15, dryer 16, enters collecting box 17 by bucket elevator.Cooling water temperature in the water tank is 28 ℃, and the dryer temperature is 65 ℃.The tin grain surface temperature that enters tin grain collecting box is 64 ℃.Tin grain particle size φ 2mm～φ 6mm, tin grain process velocity is 620kg/h, the energy consumption of processing tin grain is 0.078kw.h/kg.Out-of-roundness＜the 0.12mm of tin grain, tin grain any surface finish, densification, uniform particles, pollution-free, tin intragranular portion pore-free, loose and slag inclusion.
At first tin slab 5 is placed in the long preheating furnace of 2.0m, the ceramic heat pipe heating that preheating furnace is 17.5KW with 5 general powers, 150 ℃ of tin slab preheat temperatures, enter melting furnace 6 then, it is the electric induction furnace heating of 30KW that melting furnace adopts power, tin liquor melting furnace temperature is 250 ℃, after the tin liquor fusing, by 1 of internal diameter φ 30mm
#Graphite-pipe 8 enters holding furnace 9, and tin liquor holding furnace volume is 75% of a melting furnace volume.Holding furnace is with the ceramic heat pipe heating that is 8KW of 4 general powers, and the liquid level in the melting furnace is than the high 260mm of the liquid level in the holding furnace, and when the holding furnace temperature is 253 ℃, tin liquor is by 2 of φ 26mm
#Graphite-pipe 10 enters granulating furnace 11, and the granulating furnace volume is 75% of a holding furnace volume.Liquid level in the holding furnace is than the high 40mm of the liquid level in the granulating furnace, and when the tin liquor temperature of granulating furnace reached 251 ℃, tin liquor directly flowed out from the through hole of granulating furnace bottom, and bottom through-hole quantity is 45, and borne tin droplets is gone into the bucket elevator 14 in the water tank 13.The tin grain behind watershed 15, dryer 16, enters collecting box 17 by bucket elevator.Cooling water temperature in the water tank is 40 ℃, and the dryer temperature is 75 ℃.The tin grain surface temperature that enters tin grain collecting box is 73 ℃.Tin grain particle size φ 4mm～φ 8mm, tin grain process velocity is 850kg/h, the energy consumption of processing tin grain is 0.065kw.h/kg.Out-of-roundness＜the 0.12mm of tin grain, tin grain any surface finish, densification, uniform particles, pollution-free, tin intragranular portion pore-free, loose and slag inclusion.
Claims (8)
1, a kind of tin grain production method comprises preheating, fusing, insulation, granulation, cooling, dehydration, oven dry and tin grain collecting process successively, it is characterized in that:
After the tin slab preheating, through melting furnace tin slab is melted, described melting furnace is a kind of in electric induction furnace, resistance furnace or the heating tube, and the liquid level of melting furnace need be higher than the liquid level of holding furnace, and tin liquor is from 1
#Communicating pipe enters holding furnace, and described 1
#Communicating pipe is the U-shaped pipe that the length head is arranged, and the brachycephaly pipe end stretches into melting furnace tin liquor bottom, and a long pipe end stretches into the tin liquor bottom of holding furnace, tin liquor at holding furnace after the heating tube heating, from 2
#Communicating pipe enters granulating furnace, and the liquid level in the holding furnace is higher than the liquid level in the granulating furnace or maintains an equal level described 2
#Communicating pipe is a L shaped pipe, and an end stretches into holding furnace tin liquor bottom vertically downward, and other end level is communicated with granulating furnace, tin liquor splashes into the elevator that places water tank from the through hole of granulating furnace bottom, and cooling water is arranged in the water tank, and the tin grain passes through elevator, behind watershed, dryer, enter collecting box.
2, tin grain production method according to claim 1 is characterized in that: the tin slab preheat temperature is 100 ℃～160 ℃, and tin slab preheating section length is 1.0m～5.0m.
3, tin grain production method according to claim 1 is characterized in that: tin liquor holding furnace temperature is 245 ℃～265 ℃, and the tin liquor temperature in the granulating furnace is 245 ℃～265 ℃.
4, tin grain production method according to claim 1 is characterized in that: the liquid level in the melting furnace is than the high 80mm～300mm of the liquid level in the holding furnace, and the liquid level in the holding furnace is than the high 0～50mm of the liquid level in the granulating furnace.
5, tin grain production method according to claim 1 is characterized in that: tin grain cooling water temperature is 20 ℃～50 ℃, and tin grain dryer temperature is 60 ℃～80 ℃.
6, a kind of equipment that is used for the described tin grain of claim 1 production method, form by heating and melting device, prilling granulator and gathering-device, it is characterized in that: the heating and melting device is the hollow cavity structure, crust of the device is a heat-insulation layer, be mounted with preheating furnace in the tin slab porch, the preheating furnace bottom is provided with flame retardant coating, be equipped with conveying roller on the flame retardant coating, above conveying roller, be provided with several heating tubes, be connected with melting furnace by chute at the conveying roller end, be provided with holding furnace at the melting furnace side-lower, open a through hole on melting furnace top, install 1 in the through hole
#Communicating pipe, described 1
#Communicating pipe is the U-shaped pipe that the length head is arranged, and the brachycephaly pipe end stretches into the melting furnace bottom, and a long pipe end stretches into the bottom of holding furnace, in heating and melting device arranged outside granulating furnace is arranged, and opens a through hole above the tin liquor holding furnace, installs 2 in the through hole
#Communicating pipe, described 2
#Communicating pipe is a L shaped pipe, one end stretches into the holding furnace bottom vertically downward, other end level is communicated with granulating furnace, in the granulating furnace bottom, be provided with the through hole more than 1 or 1, be provided with water tank below granulating furnace, the elevator lower end is stretched into water tank and is positioned at the granulating furnace below, and the elevator upper end is connected successively with watershed, dryer, collecting box.
7, tin grain production equipment according to claim 6 is characterized in that 1
#With 2
#Be stainless steel, graphite or ceramic member communicating pipe, 1
#The cross-sectional area of communicating pipe is 2
#Communicating pipe cross-sectional area 120%～160%.
8, tin grain production equipment according to claim 6 is characterized in that, tin liquor holding furnace volume is 30%～80% of a melting furnace volume, and the granulating furnace volume is 30%～80% of a holding furnace volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410068082XA CN1311942C (en) | 2004-11-12 | 2004-11-12 | Method and apparatus for manufacturing tin granule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410068082XA CN1311942C (en) | 2004-11-12 | 2004-11-12 | Method and apparatus for manufacturing tin granule |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1605418A CN1605418A (en) | 2005-04-13 |
| CN1311942C true CN1311942C (en) | 2007-04-25 |
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ID=34765148
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200410068082XA Expired - Fee Related CN1311942C (en) | 2004-11-12 | 2004-11-12 | Method and apparatus for manufacturing tin granule |
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| Country | Link |
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| CN (1) | CN1311942C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100402201C (en) * | 2006-05-08 | 2008-07-16 | 西安交通大学 | Short technological process of preparing metal grains |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU967680A1 (en) * | 1981-04-10 | 1982-10-23 | Институт проблем литья АН УССР | Line for producing metallic shots |
| DD214543A1 (en) * | 1983-03-01 | 1984-10-17 | Sachsenwerk Elektromasch | DEVICE FOR PRODUCING DOSED BALL-FILLED METAL GRANULES |
| US5165476A (en) * | 1991-06-11 | 1992-11-24 | Mobil Oil Corporation | Gravel packing of wells with flow-restricted screen |
| US5258053A (en) * | 1991-07-08 | 1993-11-02 | Elkem A/S | Method for production of granules |
-
2004
- 2004-11-12 CN CNB200410068082XA patent/CN1311942C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU967680A1 (en) * | 1981-04-10 | 1982-10-23 | Институт проблем литья АН УССР | Line for producing metallic shots |
| DD214543A1 (en) * | 1983-03-01 | 1984-10-17 | Sachsenwerk Elektromasch | DEVICE FOR PRODUCING DOSED BALL-FILLED METAL GRANULES |
| US5165476A (en) * | 1991-06-11 | 1992-11-24 | Mobil Oil Corporation | Gravel packing of wells with flow-restricted screen |
| US5258053A (en) * | 1991-07-08 | 1993-11-02 | Elkem A/S | Method for production of granules |
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| CN1605418A (en) | 2005-04-13 |
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