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Scrap brass smelting auxiliary and preparation method thereof

A technology of miscellaneous brass and additives, which is applied in the field of recycled brass smelting additives and its preparation, can solve the problems of waste gas pollution, poor effect, and high cost of waste brass refining and slag removal, and achieve cost-effective and environmentally friendly, low-cost low effect

Active Publication Date: 2012-01-25
JINTIAN COPPER GROUP CORP NINGBO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved in the present invention is to solve the problems of high cost, poor effect and waste gas pollution in waste brass refining and slag removal, and propose a copper smelting auxiliary agent without corrosive waste gas to achieve high efficiency, environmental protection and low cost of condensing slag the goal of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The weight composition of ingredients is: 50% calcium carbonate, 25% quartz sand, 10% sodium chloride, and 10% charcoal powder.

[0021] The preparation method is:

[0022] a) Dry the calcium salt, sodium salt and quartz sand in an oven respectively, heat it at 150-200°C for 1-2 hours, ball mill and pulverize them separately, sieve the calcium salt with 100 mesh, sieve the sodium salt with 100 mesh, and sieve the quartz sand with 200 mesh Mesh sieve;

[0023] b) Baking the charcoal in an oven at 150-160°C for 1-2 hours, crushing and sieving with 20 meshes;

[0024] c) Weigh the dried, crushed and sieved calcium salt, sodium salt, quartz sand and charcoal powder according to the composition of the ingredients, put them into a blender and stir them evenly, take them out to cool in the air and pack them.

[0025] When in use, brazed copper is melted in the smelting furnace and kept at 950-1050°C, and the bagged copper smelting aid is added to the melt at 0.4% of the weig...

Embodiment 2

[0028] The weight composition of ingredients is: 40% calcium carbonate, 10% calcium fluoride, 20% quartz sand, 15% sodium chloride, and 15% charcoal powder.

[0029] The preparation method is:

[0030] a) Dry the calcium salt, sodium salt and quartz sand in an oven respectively, heat it at 150-200°C for 1-2 hours, ball mill and pulverize them separately, sieve the calcium salt with 100 mesh, sieve the sodium salt with 100 mesh, and sieve the quartz sand with 200 mesh Mesh sieve;

[0031] b) Baking the charcoal in an oven at 150-160°C for 1-2 hours, crushing and sieving with 20 meshes;

[0032] c) Weigh the dried, crushed and sieved calcium salt, sodium salt, quartz sand and charcoal powder according to the composition of the ingredients, put them into a blender and stir them evenly, take them out to cool in the air and pack them.

[0033] When in use, brazed copper is melted in the smelting furnace and kept at 950-1050°C, and the bagged copper smelting aid is added to the me...

Embodiment 3

[0036] The weight composition of ingredients is: 35% calcium carbonate, 5% calcium fluoride, 30% quartz sand, 15% sodium chloride, and 15% charcoal powder.

[0037] The preparation method is:

[0038] a) Dry the calcium salt, sodium salt and quartz sand in an oven respectively, heat it at 150-200°C for 1-2 hours, ball mill and pulverize them separately, sieve the calcium salt with 100 mesh, sieve the sodium salt with 100 mesh, and sieve the quartz sand with 200 mesh Mesh sieve;

[0039] b) Baking the charcoal in an oven at 150-160°C for 1-2 hours, crushing and sieving with 20 meshes;

[0040] c) Weigh the dried, crushed and sieved calcium salt, sodium salt, quartz sand and charcoal powder according to the composition of the ingredients, put them into a blender and stir them evenly, take them out to cool in the air and pack them.

[0041] When in use, brazed copper is melted in the smelting furnace and kept at 950-1050°C, and the bagged copper smelting aid is added to the mel...

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Abstract

The invention provides a scrap brass smelting auxiliary and a preparation method thereof. The smelting auxiliary used in the smelting process of scrap brass comprises the following components in percentages by weight: 40-60% of calcium salt, 5-20% of sodium salt, 20-40% of quartz sand, and 5-20% of charcoal powder. The preparation method comprises the following steps of: respectively drying the calcium salt, the sodium salt and the quartz sand; carrying out ball-milling on the calcium salt and the sodium salt to be 100-mesh and sieving; carrying out ball-milling on the quartz sand to be 200-mesh and sieving; baking the charcoal in an oven for 1 to 2 hours at a temperature of 150-160 DEG C, and crushing the charcoal to be 20-mesh and sieving; and then weighing according to the composition and ratio; and mixing with a mixer, cooling and packaging. In the use process, the equipment is not corroded and the environment is not polluted. The smelting auxiliary can be used for effectively increasing the smelting speed of scrap brass and eliminating the slag after the scrap brass is smelted and is convenient for the slag-salvaging operation, and the content of copper particles in the salvaged slag is reduced by more than 30% year-on-year, therefore the metal loss caused by slag salvaging is effectively reduced.

Description

[0001] technical field [0002] The invention relates to a copper smelting auxiliary agent, in particular to a regenerated yellow miscellaneous copper smelting auxiliary agent and a preparation method thereof. Background technique [0003] During the smelting process of copper and copper alloys, it is necessary to add smelting additives to the melting furnace to help the copper alloy melt quickly and form slag that is easy to remove. Agents are: [0004] Put the sodium salt with a low melting point directly into the waste brass smelting furnace, because the sodium salt has a low melting point, it will quickly melt into a liquid and float on the surface of the melt, which has no good coagulation effect on the inclusions in the melt , can only play a certain covering role, and the effect of removing waste and slag is not obvious. [0005] Using two or three mixtures of cryolite, sodium salt, fluorite, and glass, this mixture can play a role in refining and degassing, but for...

Claims

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Application Information

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IPC IPC(8): C22B15/14C22C1/06C22C9/04
Inventor 洪燮平贺挺王永如
Owner JINTIAN COPPER GROUP CORP NINGBO
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