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Preparation method of zinc oxide

A zinc oxide and zinc hydroxide technology, applied in the direction of zinc oxide/zinc hydroxide, etc., can solve the problems of reducing zinc oxide production and zinc material waste, and achieve the effects of reducing waste, increasing production and improving utilization efficiency

Inactive Publication Date: 2020-08-25
张家港凯铭锌业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the process of preparing zinc oxide, it is usually carried out by high-temperature roasting. Due to high-temperature roasting, a large amount of waste residue will be generated during the preparation of zinc oxide, and the zinc material cannot be completely reacted, resulting in that after the preparation of zinc oxide is completed, The generated slag contains zinc. However, after the preparation of zinc oxide, the slag will only be discarded. In this way, as more and more waste slag is discarded, it will cause waste of zinc materials and reduce the zinc oxide. Yield

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The present invention proposes a kind of zinc oxide preparation method, comprises the following steps:

[0023] S1: Melting treatment, place the zinc ingot in the graphite crucible, then place the graphite crucible in the melting furnace, raise the temperature of the melting furnace to 650°C, and then melt the zinc ingot;

[0024] S2: Evaporation treatment, placing the graphite crucible with molten zinc material in the evaporation furnace, raising the temperature in the evaporation furnace to 1300°C, for melting and gasifying the molten zinc material to obtain zinc vapor and waste residue;

[0025] S3: Oxidation treatment, the molten zinc material evaporates violently at high temperature, a large amount of zinc vapor enters the distribution chamber in the oxidation furnace through the air duct and sprays out from the nozzle on the vault, so that zinc oxide is sprayed into the oxidation chamber of the oxidation furnace, and at the same time Oxygen enters the oxidation ch...

Embodiment 2

[0032] The present invention proposes S1: melting treatment, placing the zinc ingot in a graphite crucible, then placing the graphite crucible in a melting furnace, raising the temperature of the melting furnace to 682°C, and then performing melting treatment on the zinc ingot;

[0033] S2: Evaporation treatment, place the graphite crucible with molten zinc material in the evaporation furnace, raise the temperature in the evaporation furnace to 1388°C, and use it to melt and gasify the molten zinc material to obtain zinc vapor and waste residue;

[0034] S3: Oxidation treatment, the molten zinc material evaporates violently at high temperature, a large amount of zinc vapor enters the distribution chamber in the oxidation furnace through the air duct and sprays out from the nozzle on the vault, so that zinc oxide is sprayed into the oxidation chamber of the oxidation furnace, and at the same time Oxygen enters the oxidation chamber from the air door of the oxidation furnace, and...

Embodiment 3

[0041] The present invention proposes S1: melting treatment, placing the zinc ingot in a graphite crucible, then placing the graphite crucible in a melting furnace, raising the temperature of the melting furnace to 750°C, and then performing melting treatment on the zinc ingot;

[0042] S2: Evaporation treatment, placing the graphite crucible with molten zinc material in the evaporation furnace, raising the temperature in the evaporation furnace to 1420°C, for melting and gasifying the molten zinc material to obtain zinc vapor and waste residue;

[0043] S3: Oxidation treatment, the molten zinc material evaporates violently at high temperature, a large amount of zinc vapor enters the distribution chamber in the oxidation furnace through the air duct and is sprayed out from the nozzle on the vault, so that zinc oxide is sprayed into the oxidation chamber of the oxidation furnace, and at the same time Oxygen enters the oxidation chamber from the air door of the oxidation furnace,...

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PUM

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Abstract

The invention discloses a preparation method of zinc oxide. The preparation method comprises the following steps of: melting treatment, evaporation treatment, oxidation treatment, collection treatment, waste residue treatment, neutralization and precipitation treatment, drying treatment and forging treatment. According to the preparation method of the zinc oxide provided by the invention, waste residues generated in an existing zinc oxide preparation process are treated again, so that the waste of a zinc material in the zinc oxide production process is reduced, the utilization efficiency of the zinc material is improved, and the yield of the zinc oxide is improved.

Description

technical field [0001] The invention relates to the technical field of zinc oxide preparation, in particular to a preparation method of zinc oxide. Background technique [0002] In the process of preparing zinc oxide, it is usually carried out by high-temperature roasting. Due to high-temperature roasting, a large amount of waste residue will be generated during the preparation of zinc oxide, and the zinc material cannot be completely reacted, resulting in that after the preparation of zinc oxide is completed, The generated slag contains zinc. However, after the preparation of zinc oxide, the slag will only be discarded. In this way, as more and more waste slag is discarded, it will cause waste of zinc materials and reduce the zinc oxide. Yield. Contents of the invention [0003] The present invention proposes a method for preparing zinc oxide to solve the problems raised in the above-mentioned background technology. [0004] The present invention proposes a kind of zinc...

Claims

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Application Information

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IPC IPC(8): C01G9/02
CPCC01G9/02
Inventor 金柯金旺达陆建云金建东
Owner 张家港凯铭锌业有限公司