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Device and method for producing stannic oxide through self-heating way

A tin dioxide and self-heating technology, applied in tin oxide and other directions, can solve the problems of high relative cost, high technical requirements, and high equipment investment, and achieve stable and reliable equipment operation, improve product quality, and ensure the effect of purity.

Active Publication Date: 2014-09-03
LANZHOU ENG & RES INST OF NONFERROUS METALLURGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a device for producing tin dioxide by autothermal method to solve the technical problems of high technical requirements, high equipment investment and high relative cost in the production of tin dioxide by gasification

Method used

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  • Device and method for producing stannic oxide through self-heating way
  • Device and method for producing stannic oxide through self-heating way
  • Device and method for producing stannic oxide through self-heating way

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040]The steps are as follows: move the autothermal oxidation furnace 1 to the ambient cooling dust collection system 2, turn on the centrifugal fan 14 of the ambient cooling dust collection system 2, align the smoke exhaust port 7 with the fume hood 11, and use natural gas to heat up to 1200°C, Add the tin ingot from the feeding port 6 to start melting, observe the height of the tin liquid from the operation port 9 to 300mm, at this time the furnace temperature drops to 1000 ° C, continue to heat to the furnace temperature of 1200 ° C, stop the heating, and move the self-heating oxidation furnace 1. Go to the main process cooling and dust collection system 3, connect the main process fume hood 15 with the exhaust port 7, turn on the main process centrifugal fan 20, slowly lower the spray gun 4, insert the spray gun 4 into the autothermal oxidation furnace 1 from the spray gun hole 8, and pass through the For the primary air and fuel, insert the secondary air pipe 5 into the s...

Embodiment 2

[0043] Move the autothermal oxidation furnace 1 to the ambient cooling dust collection system 2, turn on the centrifugal fan 14 of the ambient cooling dust collection system 2, align the exhaust port 7 with the fume hood 11, and use natural gas to heat up to 1211 ° C. 6. Add the tin ingot to start melting, observe the height of the tin liquid from the operation port 9 to 320mm, at this time the furnace temperature drops to 1000 ℃, continue to heat to the furnace temperature of 1280 ℃, stop heating, and move the autothermal oxidation furnace 1 to the main process Cool the dust collection system 3, connect the main process fume hood 15 with the smoke exhaust port 7, turn on the main process centrifugal fan 20, slowly lower the spray gun 4 into the autothermal oxidation furnace 1 from the spray gun hole 8, and introduce primary air and fuel , insert the secondary air pipe 5 into the secondary air port 10 and blow the secondary air; open the primary air pipe valve and the secondary...

Embodiment 3

[0045] Move the autothermal oxidation furnace 1 to the ambient cooling dust collection system 2, turn on the centrifugal fan 14 of the ambient cooling dust collection system 2, align the exhaust port 7 with the fume hood 11, and use natural gas to heat the temperature to 1230 ° C. 6. Add the tin ingot to start melting, observe the height of the tin liquid from the operation port 9 to 280mm, at this time the furnace temperature drops to 1000 ℃, continue to heat to the furnace temperature of 1240 ℃, stop heating, and move the autothermal oxidation furnace 1 to the main process Cool the dust collection system 3, connect the main process fume hood 15 with the smoke exhaust port 7, turn on the main process centrifugal fan 20, slowly lower the spray gun 4 into the autothermal oxidation furnace 1 from the spray gun hole 8, and introduce primary air and fuel , insert the secondary air pipe 5 into the secondary air port 10 and blow the secondary air; open the primary air pipe valve and ...

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Abstract

The invention discloses a device and a method for producing tin dioxide by an autothermal method to solve the technical problems of high technical requirements, high equipment investment and relatively high cost in the production of tin dioxide by a gasification method. It includes an autothermal oxidation furnace, the top of the autothermal oxidation furnace is provided with a smoke exhaust port, a spray gun hole and a secondary air port, and the side wall of the autothermal oxidation furnace is provided with a feeding port. After the metal tin ingot is melted into tin liquid by the method of the present invention, the primary air is used to oxidize the metal tin to stannous oxide in the reaction zone to volatilize, and in the same furnace, the stannous oxide is oxidized to tin dioxide with secondary air. Utilizing the reaction heat of the oxidation process, the production process can be completely self-heated without adding any fuel. In addition to using fuel to heat and melt the tin ingot when the furnace is opened, the invention does not require any fuel, the equipment is stable and reliable, and self-heating smelting is truly realized, and the product particle size, purity and whiteness can meet the requirements, and the slag can be Recycled without increasing the amount.

Description

technical field [0001] The invention belongs to the field of metallurgy and chemical industry, and in particular relates to a device and a method for producing tin dioxide by an autothermal method. Background technique [0002] Tin dioxide is widely used in the production of electrode materials, conductive oxide films, glass industry, electronics industry, and ceramics industry. [0003] At present, the production of tin dioxide mainly includes wet method and fire method. The wet method is mainly nitric acid method, which consumes a lot of nitric acid, causes serious environmental pollution, high tin consumption and low product purity. In addition, there are sol-gel method, gel-combustion method, chemical precipitation method, etc. to produce nanometer tin dioxide. The fire method is mainly the gasification method, also known as the arc gasification synthesis method, which was successfully tested as early as 1958. After further improvement, it has become the main method for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G19/02
Inventor 陈正刘彪萧子良刘华利陈金明
Owner LANZHOU ENG & RES INST OF NONFERROUS METALLURGY
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