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Preparation method and use method of copper dross smelting slag former

A technology of slag-forming agent and copper scum, applied in the field of metallurgy and chemical industry, can solve the problems of high recovery cost, large amount of slag-forming agent, insufficiency, etc., so as to reduce comprehensive recovery cost, improve recovery efficiency, and reduce smelting temperature Effect

Inactive Publication Date: 2022-05-31
ANHUI NARADA RENEWABLE RESOURCE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the above-mentioned technical problems, the object of the present invention is to provide a method for preparing and using a copper scum smelting slag-forming agent: by adding copper scum to the reverberatory furnace, the reverberatory furnace is heated and smelted, and then anode slime is added, and the Copper scum and anode slime are melted and then added with slagging agent for reduction reaction. Stir at the same time to keep liquid thin slag. After the reduction, let it stand for precipitation to release the upper layer of thin slag, the middle layer of lead matte, and the lower layer of high antimony lead The antimony liquid is used for blowing antimony, separating and recovering high-purity antimony oxygen powder. After the antimony blowing is over, the remaining lead is released, the bottom lead is kept, and the temperature is continued to be added to start the next furnace smelting. , after grinding, the ideal fineness still cannot be achieved, resulting in the inability to fully react with the smelting liquid after adding the slagging agent, resulting in a large amount of slagging agent used, low resource recovery rate in the smelting liquid, and high recycling costs

Method used

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  • Preparation method and use method of copper dross smelting slag former
  • Preparation method and use method of copper dross smelting slag former

Examples

Experimental program
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Effect test

Embodiment 1

[0045] The present embodiment is a preparation method of a grinding aid, comprising the following steps:

[0046] A11: 11mmol of 3-bromopropene, 10mmol of 5-hydroxy-1,3-dimethyl phthalate, 10mmol of potassium carbonate and 30mL of acetone were added to the three-necked flask equipped with a stirrer, a thermometer and a reflux condenser, and the stirring rate was Under the condition of 300r / min, the temperature was raised to reflux reaction, and then the reaction was stirred at constant temperature for 45h. After the reaction, the reaction product was vacuum filtered, the filtrate was rotary evaporated to remove the solvent, and the evaporated product was placed in anhydrous methanol for recrystallization, and then Vacuum filtration, place the filter cake in a vacuum drying oven and dry to constant weight to obtain Intermediate 1;

[0047] A12: Add 50 mL of tetrahydrofuran and 60 mmol of lithium aluminum hydride into a three-necked flask equipped with a stirrer, a thermometer a...

Embodiment 2

[0052] The present embodiment is a preparation method of a grinding aid, comprising the following steps:

[0053] A21: 11mmol of 3-bromopropene, 10mmol of 5-hydroxy-1,3-dimethyl phthalate, 10mmol of potassium carbonate and 50mL of acetone were added to the three-necked flask equipped with a stirrer, a thermometer and a reflux condenser, and the stirring rate was Under the condition of 500r / min, the temperature was raised to reflux reaction, and then the reaction was stirred at constant temperature for 50h. After the reaction, the reaction product was vacuum filtered, the filtrate was rotary evaporated to remove the solvent, and the evaporated product was placed in anhydrous methanol for recrystallization. Vacuum filtration, place the filter cake in a vacuum drying oven and dry to constant weight to obtain Intermediate 1;

[0054] A22: Add 50 mL of tetrahydrofuran and 60 mmol of lithium aluminum hydride into a three-necked flask equipped with a stirrer, a thermometer and a cons...

Embodiment 3

[0059] The present embodiment is a preparation method of a copper scum smelting slag-forming agent, comprising the following steps:

[0060] Step 1: Weigh 1.5 parts of bituminous coal, 5 parts of electric furnace slag, 1 part of iron filings, 2 parts of quicklime and 2.8 parts of sodium carbonate according to parts by weight, for subsequent use;

[0061] Step 2: mix the bituminous coal, electric furnace slag and iron filings evenly to obtain a mixture A, add quicklime and sodium carbonate into a pulverizer and pulverize into powder to obtain a mixture B;

[0062] Step 3: Mix the mixture A, the grinding aid from Example 1 and water uniformly according to 1kg: 1g: 2L and then transfer it to the ball mill tank, and add zirconia balls at a mass ratio of 10:1. Then, under the conditions of revolution speed of 250r / min and rotation speed of 600r / min, ball milling for 4 hours, discharging to obtain slurry, drying the slurry and pulverizing it into powder to obtain abrasive;

[0063]...

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Abstract

The invention relates to the technical field of metallurgy and chemical industry, in particular to a preparation method and a use method of a slagging agent for smelting copper dross, which are used for solving the problems that the use amount of the slagging agent is large, the resource recovery rate in a smelting solution is low and the recovery cost is high because the existing slagging agent cannot fully react with the smelting solution. Copper dross is added into a reverberatory furnace to be heated and smelted, then anode slime is added, after the copper dross and the anode slime are smelted, a slag former is added for a reduction reaction, meanwhile, stirring is conducted, liquid-state thin slag is kept, after reduction is finished, standing precipitation is conducted, and upper-layer thin slag, middle-layer lead copper matte and lower-layer high-antimony lead liquid are discharged; according to the using method, molten copper dross and anode slime are reduced through the slag former, smelting sticky slag and non-molten slag are converted into thin slag with good fluidity, tin, copper and high-antimony lead in the copper dross can be recycled in a classified mode through one-time smelting, the copper dross resource recycling efficiency is greatly improved, the service life of a reverberatory furnace is prolonged, and the production cost is reduced. The comprehensive recovery cost of the secondary lead is reduced.

Description

technical field [0001] The invention relates to the technical field of metallurgy and chemical industry, in particular to a preparation method and a use method of a slag-forming agent for copper scum smelting. Background technique [0002] Copper scum is the product of crude lead pyrorefining and smelting copper. It is mainly composed of copper sulfide, lead sulfide, lead oxide and metal lead. Generally, it contains 10-45% copper and 40-85% lead. In addition, it also contains Zn, Sn, As, Sb, Co, Ni, Ag, Au and other elements. [0003] At present, most domestic lead smelting enterprises use pyrotechnics to recover valuable metals such as lead, copper, and silver in copper scum. According to the different smelting equipment used in the process, they can be divided into blast furnace smelting, reverberatory furnace smelting, and rotary kiln smelting. method and electric furnace smelting method, etc., and these methods are all traditional techniques and have great limitations. ...

Claims

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Application Information

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IPC IPC(8): C22B7/04C22B15/04C22B30/02C22B9/10C22B25/02C22B25/06C22B13/02C07C67/31C07C69/92C07C41/26C07C43/23C07C213/02C07C217/22C07C213/08C09K3/14
CPCC22B7/04C22B7/001C22B15/0036C22B15/0054C22B15/0052C22B30/02C22B9/10C22B25/02C22B25/06C22B13/025C09K3/14C07C67/31C07C41/26C07C213/02C07C213/08C07C69/92C07C43/23C07C217/22Y02P10/20
Inventor 周笛陈华勇冯金娣
Owner ANHUI NARADA RENEWABLE RESOURCE TECH CO LTD
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