A zinc alloy and zinc slag regenerative iron removal refiner

A technology of zinc alloy and refiner, which is applied in the field of zinc alloy and zinc slag regeneration iron removal refiner, can solve the problems of high energy consumption and low recovery rate of iron removal process with slagging agent, and achieve good environmental protection and safety , less investment in equipment and funds, and reasonable composition control

Active Publication Date: 2020-08-28
湖南株冶有色金属有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention solves the problem of high energy consumption and low recovery rate of the distillation method, smelting smelting method, vacuum distillation method, aluminum method, wet regeneration process, and slagging agent removal process adopted in the existing zinc alloy and zinc slag recycling technology. Low, the effective aluminum in the zinc dross can not be well utilized and the technical problem that the zinc dross can not be used directly as a hot-dip galvanized alloy after zinc dross treatment, and a new type of zinc alloy and zinc dross regeneration iron removal refiner is provided, which can make zinc The iron in the base alloy and zinc slag can be fully removed and purified to improve its product quality, and at the same time, it is conducive to safety and environmental protection and the recycling of zinc slag, while ensuring that the zinc ash can be refined and recycled

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Prepare the zinc alloy and zinc slag regenerating deironing refiner S1 of the present embodiment according to the following composition: 30wt% CaF2, 10wt% NaCl, 10wt% Na2SiF6, 30wt% AlSi and Si powder, 10wt% charcoal powder, 10wt% Na3AlF6, and the essential impurities carried by the above components.

[0024] Zinc alloy is produced in a coreless induction furnace and iron is removed. When the furnace temperature is about 600°C, the zinc alloy and zinc slag regenerated iron removal refiner S1 are used to remove iron and slag and refine the zinc alloy. The slagging process No smoke or less smoke, and no irritating smell. The addition amount of zinc alloy and zinc slag regenerated iron removal refiner is 0.1wt% of the total amount of zinc alloy added to the centerless induction furnace. After the iron removal and slag refining treatment, the amount of zinc ash produced by 1 ton of zinc alloy is 12 kg , The direct yield rate is 98.8%, the iron content is reduced from 0.014...

Embodiment 2

[0026] Prepare the zinc alloy and zinc slag regenerated iron removal refiner S2 of the present embodiment according to the following composition: 30wt% CaF2, 15wt% NaCl, 5wt% Na2SiF6, 25wt% AlSi and Si powder, 15wt% charcoal powder, 10wt% Na3AlF6, and the essential impurities carried by the above components.

[0027] Plating zinc slag is treated in a cored induction furnace. When the furnace temperature is about 650°C, the zinc alloy and zinc slag regenerated iron removal and refining agent S2 are used to refine the zinc alloy liquid to remove iron and make slag. There is no or less smoke during the process, and no irritating smell is produced. The addition amount of zinc alloy and zinc slag regenerated iron removal refiner is 0.5wt% of the total amount of plated slag added to the cored induction furnace. After slag removal, zinc slag (galvanized plate slag) produces 18 kg of zinc ash, the iron content is reduced from 0.7% to below 0.005%, the aluminum content remains unchang...

Embodiment 3

[0029] Prepare the zinc alloy and zinc slag regenerated deironing refiner S3 of the present embodiment according to the following composition: 20wt% CaF2, 10wt% NaCl, 10wt% Na2SiF6, 30wt% AlSi and Si powder, 10wt% charcoal powder, 20wt% Na3AlF6, and the essential impurities carried by the above components.

[0030]Zinc slag of plated structural parts is treated in a cored induction furnace. When the furnace temperature is about 700 ° C, the zinc alloy and zinc slag regenerated iron removal refiner S3 are used to refine the zinc alloy liquid to remove iron and form slag, resulting in There is no or little smoke in the slag process, and no irritating odor is produced. The addition amount of zinc alloy and zinc slag regenerated iron removal refiner is 2wt% of the total amount of plating slag in the cored induction furnace. galvanized slag after plating slag) produces 25 kg of zinc ash, the iron content is reduced from 2.5% to below 0.008%, the aluminum content remains unchanged ...

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PUM

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Abstract

The invention provides a zinc alloy and zinc slag regeneration deironing refining agent. The total mass of the zinc alloy and the zinc slag regeneration deironing refining agent is taken as a reference, comprises the following components of, in percentage by weight, 20-30% of CaF2, 10-20% of NaCl, 5-10% of Na2SiF6, 20-30% of AlSi and Si powder, 10-20% of charcoal powder, 10-20% of Na3AlF6. According to the zinc alloy and zinc slag regeneration deironing refining agent, iron in the zinc alloy and the zinc slag can be effectively removed after use, zinc-ash-entrained metal particle zinc is reduced at the same time, and the one-time direct yield is improved.

Description

technical field [0001] The invention relates to a zinc alloy and zinc slag regenerative iron removal and refining agent, which is used in the technical field of zinc, zinc-based alloys and zinc slag regeneration iron removal and zinc ash refinement. Background technique [0002] In the zinc consumption structure, hot-dip galvanizing zinc consumption has always occupied the first place, and the consumption of zinc for hot-dip galvanizing in foreign developed countries accounts for 60% to 70% of the total zinc consumption. More than two million tons. The composition of hot-dip galvanized zinc loss is mainly composed of three parts: the thickness of the zinc layer of steel components, zinc dust, and zinc dross. The hot-dip galvanizing process is the process of forming a zinc-iron alloy layer. During the galvanizing process, the iron in the iron and steel parts and the iron galvanizing pot will continuously dissolve into the zinc bath. When the iron content continues to increas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/06C22C1/02C22C18/00C22B7/00C22B19/20C22B19/30
CPCC22B7/001C22B19/20C22B19/30C22C1/02C22C1/06C22C18/00Y02P10/20
Inventor 张伟高盟徐军张德晶彭双义唐亦秋戴慧敏周玉琳林文军
Owner 湖南株冶有色金属有限公司
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