A Production Process of Alloy Zinc Powder for Reducing Zinc Content in Water Quenching Slag

A technology of alloy zinc powder and production process, which is applied in the field of production process of alloy zinc powder to reduce the zinc content of water quenching slag, which can solve the problems of high zinc content in slag and waste of metal zinc resources, etc., and achieve small smoke volume and fast reaction speed , The effect of short process flow

Active Publication Date: 2018-12-14
BAIYIN NONFERROUS GROUP
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  • Description
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  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a production process of alloyed zinc powder that reduces the zinc content in water-quenched slag, so as to solve the problem in the prior art that the high zinc content in the water-quenched slag causes a large amount of metal zinc resources to be wasted

Method used

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  • A Production Process of Alloy Zinc Powder for Reducing Zinc Content in Water Quenching Slag
  • A Production Process of Alloy Zinc Powder for Reducing Zinc Content in Water Quenching Slag
  • A Production Process of Alloy Zinc Powder for Reducing Zinc Content in Water Quenching Slag

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Embodiment 1

[0019] A production process of alloyed zinc powder for reducing zinc content in water-quenching slag, comprising the steps of:

[0020] Step 1. Material ratio adjustment

[0021] During the batching process, the temperature of the material is heated to 180-220 ° C, and the moisture in the material is dried to below 1%. The coke excess coefficient C in the batching process is adjusted to the segmented ratio of different production periods. The coke excess coefficient in the material ratio of the normal production process is 8 -10%, the coke excess coefficient in the material ratio before shutdown and start-up is increased to 15%-18%, and the coke excess coefficient in the material ratio before slagging is increased to 20%-22%.

[0022] At present, most of the materials produced by alloy zinc powder are composed of zinc calcine, coke, quicklime, and quartz mixed according to specific process requirements. After mixing, they are added to the electric rotary kiln, and the air ente...

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Abstract

The invention relates to an alloy zinc powder production technology capable of reducing contained zinc of water-quenched slag. The technology specifically comprises the steps of adjusting material proportioning, controlling the material adding manner, reasonably controlling temperature in a furnace, adjusting furnace slag acidity and alkalinity, prolonging material stopping time before slag discharging, and stably controlling the temperature of a condenser; and according to alloy zinc powder produced by the technology, the available zinc stably reaches more than 90%, the contained zinc in the water-quenched slag is averagely lower than 7%, and the standard that according to the requirement of the GB / T 6890-2012, the available zinc is larger than 88%, and the contained zinc in the slag is lower than 8% is completely met.

Description

technical field [0001] The invention relates to the field of nonferrous metal smelting, in particular to a production process of alloyed zinc powder for reducing the zinc content in water quenching slag. Background technique [0002] At present, the production of alloy zinc powder is to mix high-grade zinc oxide or high-temperature zinc calcined sand, carbonaceous reducing agent, and flux uniformly according to the ingredient ratio required for smelting, bake in a rotary drying kiln, and then add a closed submerged heat furnace for reduction. Smelting, the zinc in the material is reduced and volatilized, and the gangue is melted to form slag. The reduced zinc vapor enters the condenser along with the high-temperature flue gas, and is cooled rapidly to become fine-grained zinc powder. During the smelting process of the electric furnace, zinc oxide is reduced and volatilized into zinc vapor. After condensation, it is collected by the active throat, condenser, first and second...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/20C22B19/04C22B4/06
CPCB22F9/20C22B4/06C22B19/04
Inventor 焦晓斌段宏志李德磊苟有强翟睿冶玉花马菲菲崔耀段小维刘世聪武浩
Owner BAIYIN NONFERROUS GROUP
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