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Method for producing ferrotungsten with tungsten carbide obtained by tungsten-containing waste processing as raw material

A technology of tungsten carbide and tungsten waste, which is applied in the field of producing ferro-tungsten with tungsten carbide as the raw material, can solve the problems of complicated equipment process operation, long smelting time, large floor area, etc., and achieve obvious advantages in economic benefits, less investment in process equipment, The effect of less water consumption

Active Publication Date: 2013-03-27
HUNAN LITIAN TUNGSTEN IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing ferro-tungsten production process mainly uses tungsten concentrate as raw material, and electric furnace is used as the main production equipment. The production capacity is large and the process is relatively mature. However, this process has long smelting time, high energy consumption, complicated equipment and process operation, and occupies a large area.

Method used

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  • Method for producing ferrotungsten with tungsten carbide obtained by tungsten-containing waste processing as raw material
  • Method for producing ferrotungsten with tungsten carbide obtained by tungsten-containing waste processing as raw material

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0027] 1. Put tungsten carbide powder with a particle size of 40 mesh into a resistance furnace, heat it up to 450°C, and keep it warm for 18 hours to obtain tungsten trioxide, cool and discharge.

[0028] 2. Ingredients in the following proportions (unit: kg):

[0029] Tungsten trioxide: 660

[0030] Iron powder: 143

[0031] Aluminum powder: 170

[0032] Calcium oxide: 17

[0033] Calcium fluoride: 10

[0034] 3. Pour the prepared materials into the mixer for 14 minutes to mix the materials evenly.

[0035] 4. Pour the mixed materials into the reaction furnace body, sprinkle magnesium powder on the materials, ignite them with alcohol, and the materials will start spontaneous combustion reaction for 8 minutes, and let stand to cool.

[0036] 5. Use clamps to remove the slag on the upper part of the tungsten alloy, and cool the tungsten-iron alloy with water.

[0037] 6. Crush the tungsten-iron alloy with a jaw crusher.

[0038] 7. Sampling and analysis, all indicators meet the requirements, ...

example 2

[0040] 1. Put tungsten carbide powder with a particle size of 30 meshes into a resistance furnace, heat up to 520°C, keep it for 15 hours to obtain tungsten trioxide, cool and discharge

[0041] 2. Ingredients in the following proportions (unit: kg):

[0042] Tungsten trioxide: 556

[0043] Iron powder: 200

[0044] Aluminum powder: 153

[0045] Calcium oxide: 100

[0046] Calcium fluoride: 11

[0047] 3. Pour the prepared materials into the mixer for 10 minutes to mix the materials evenly.

[0048] 4. Pour the mixed materials into the reaction chamber, sprinkle magnesium powder on the materials, ignite them with alcohol, and the materials will start spontaneous combustion reaction for 11 minutes, and let stand to cool.

[0049] 5. Remove the slag on the upper part of the tungsten alloy, and cool the tungsten-iron alloy with water

[0050] 6. Crush the tungsten-iron alloy with a jaw crusher.

[0051] 7. Sampling and analysis, all indicators meet the requirements, finishing, and packaging acco...

example 3

[0053] 1. Put tungsten carbide powder with a particle size of 30 meshes into a resistance furnace, heat up to 600°C, keep it for 12 hours to obtain tungsten trioxide, cool and discharge

[0054] 2. Ingredients in the following proportions (unit: kg):

[0055] Tungsten trioxide: 620

[0056] Iron powder: 156

[0057] Aluminum powder: 153

[0058] Calcium oxide: 52

[0059] Calcium fluoride: 19

[0060] 3. Pour the prepared materials into the mixer for 18 minutes to mix the materials evenly.

[0061] 4. Pour the mixed materials into the reaction chamber, sprinkle magnesium powder on the materials, ignite them with alcohol, and the materials will start to spontaneously react for 15 minutes, and let stand to cool.

[0062] 5. Remove the slag on the upper part of the tungsten alloy, and cool the tungsten-iron alloy with water

[0063] 6. Crush the tungsten-iron alloy with a jaw crusher.

[0064] 7. Sampling and analysis, all indicators meet the requirements, finishing, and packaging according to t...

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Abstract

The invention relates to a production method of ferrotungsten, in particular to a method for producing ferrotungsten with tungsten carbide obtained by tungsten-containing waste processing as a raw material. The traditional ferrotungsten production technology mainly uses the tungsten concentrate as the raw material and an electric furnace as main production equipment and has large production capacity and more mature technology, however, the traditional ferrotungsten production technology has long smelting duration, high energy consumption, complicated equipment technical operation and large floor space. According to the invention, with the purpose of overcoming the defects of the prior art, the used technical scheme is that: the ferrotungsten alloy is produced through the oxidizing roasting of the tungsten carbide and the aluminothermic reduction method. The method disclosed by the invention effectively uses the tungsten-containing waste, realizes the deep processing of the tungsten-containing waste and has great importance in the aspect of resource reclamation and has the advantages of high recovery rate and remarkable economic benefit.

Description

Technical field [0001] The present invention relates to a production method of ferro tungsten, in particular to a method of producing ferro tungsten by using tungsten carbide obtained by processing tungsten waste materials as raw materials. Background technique [0002] The existing ferro-tungsten production process mainly uses tungsten concentrate as the raw material and electric furnace as the main production equipment. The production volume is large and the process is relatively mature. However, this process has a long smelting time, high energy consumption, complex equipment and process operations, and a large area. . [0003] The recycling and processing of tungsten-containing waste in China has gradually become a large-scale industry. The tungsten-containing waste is treated by a wet process to remove most of the impurities in it, and products with tungsten carbide as the main component are obtained. At present, there are a large number of products on the market. The enterpr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/00C22C27/04
Inventor 李湘军曹育龙陈文科
Owner HUNAN LITIAN TUNGSTEN IND CO LTD
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