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Metal matte granulating system and operation method thereof

An operation method and metal matte technology, applied in the direction of drum furnace, crucible furnace, furnace, etc., can solve the problems of poor quality of matte, high failure rate of equipment operation, shortened equipment life, etc.

Inactive Publication Date: 2016-06-15
YANGGU XIANGGUANG COPPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The acidic water quality is easy to corrode the equipment, resulting in shortened life of the equipment and high failure rate of the equipment. In order to change this situation, most of them use sodium hydroxide to adjust the pH value of the cooling water to make the pH value higher than 7.
However, as the production proceeds, sodium hydroxide is continuously added along with the pH value of the cooling water, which causes a large amount of sodium sulfate and sodium sulfite to be produced in the cooling water, and a large amount of sodium sulfate and sodium sulfite are entrained into the matte, making the quality of the matte worse , causing some problems for subsequent production

Method used

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  • Metal matte granulating system and operation method thereof
  • Metal matte granulating system and operation method thereof
  • Metal matte granulating system and operation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] A granulator and a cooling water nozzle are arranged inside the granulation tower, and the cooling water nozzle is arranged directly below the granulator. The bottom of the granulation tower is provided with a sedimentation tank and a transportation device, and one end of the transportation device is placed on the in the sedimentation tank;

[0057] The outlet of the sedimentation tank is connected to the inlet of the 1# water storage tank, the 1# pump is arranged in the inside of the 1# water storage tank, and the outlet of the 1# pump is connected to an inlet of the reaction tank, and the milk of lime storage tank The outlet is connected to the other inlet of the reaction tank, the outlet of the lime stirring tank is connected to the inlet of the milk of lime storage tank, the outlet of the reaction tank is connected to the inlet of the pumping device, and the outlet of the pumping device is connected to the inlet of the filtering device connected, the outlet of the f...

Embodiment 2

[0059] Lime milk preparation: The prepared lime milk contains Ca(HO) 2 20kg / m 3 , that is, weigh 20kg (90%) of calcium oxide, put it into a reaction vessel, add 1000kg of water, and stir evenly.

[0060] Metal matte granulation: Metal matte is discharged from the smelting furnace and enters the granulator in the granulation tower. The metal matte is granulated by the granulator and becomes molten droplets. The molten droplets are cooled by the cooling water sprayed from the cooling water nozzle. Metal matte particles, metal matte particles and cooling water enter the sedimentation tank at the bottom of the granulation tower together, after sedimentation, the conveyor belt takes the metal matte particles out of the granulation tower and separates them from the cooling water, and the cooling water enters the first In the water storage tank, part of the cooling water in the first water storage tank overflows into the second water storage tank, and the 1# pump pumps the remaining...

Embodiment 3

[0065] The preparation process of milk of lime is the same as that of Example 2 with the granulation process of metal matte, the difference is: the process of removing sodium sulfite and sodium sulfate: the cooling water contains SO 4 2- and SO 3 2- When the concentration is 0.5mol / L, inject 10m into the reaction tank 3 Cool water, then slowly add 19m 3 Lime milk, and keep stirring for 30min.

[0066] After stirring and reacting, the reacted solution was pumped to a filter press by 1# pump for filtration.

[0067] After filtering through a filter press, the filtrate (SO 4 2- and SO 3 2- The concentration is 0.01mol / L) and filter residue (gypsum), and the filtrate enters the storage tank as cooling water.

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Abstract

The invention provides a metal matte granulation system, which includes a granulation device and a cooling water treatment device. A granulator and a cooling water nozzle are sequentially arranged inside the granulation tower from the direction of the entrance of the granulation tower; the granulation tower The bottom of the sedimentation tank is provided with a transportation device, the first outlet of the sedimentation tank is connected with the inlet of the transportation device; the second outlet of the sedimentation tank is connected with the inlet of the first storage tank; the first The pump is arranged inside the first water storage tank, and the outlet of the first pump is connected with the inlet of the reaction tank; the outlet of the reaction tank is connected with the inlet of the filter device; the outlet of the filter device is connected with the inlet of the filter device The first inlet of the second water storage tank is connected; the second pump is arranged inside the second water storage tank, and the outlet of the second pump is connected with the inlet of the cooling water spray head. The invention can solve the influence of sodium sulfate and sodium sulfite produced in the matte granulation process on the quality of the matte and improve the quality of the matte.

Description

technical field [0001] The invention relates to the technical field of metal smelting, in particular to a metal matte granulation system and an operation method thereof. Background technique [0002] In the field of pyrometallurgy, such as iron and steel smelting, copper smelting, etc., it is necessary to granulate a large amount of high-temperature melt. copper. [0003] When granulating sulfur-containing metal matte, sulfur in the high-temperature molten metal matte reacts with oxygen in the air to form sulfur dioxide or sulfur trioxide, which will form sulfurous acid and sulfuric acid respectively after being dissolved in water, thus making the water quality acidic water quality. The acidic water quality is easy to corrode the equipment, resulting in shortened equipment life and high failure rate of equipment operation. In order to change this situation, most of them use sodium hydroxide in the cooling water to adjust the pH value of the cooling water to make the pH val...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/14C22B15/00
CPCC22B1/14C22B15/0004
Inventor 董广刚祁茂刚
Owner YANGGU XIANGGUANG COPPER
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