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Comprehensive Utilization Method of Zinc Slag
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A technology of zinc slag and mixed material, applied in the field of chemical technology, can solve the problems of pollution, waste of resources and environment, low production added value, etc., and achieve the effect of reducing production cost and reducing environmental pollution.
Inactive Publication Date: 2015-10-07
SHANDONG UNIV OF TECH
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Problems solved by technology
There are hundreds of thousands of tons of zinc slag waste discharged in my country every year. The current treatment method for zinc slag is to pile it up in a certain area for centralized discharge, resulting in waste of resources and environmental pollution.
The current approach is to produce construction cement with low added value
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Embodiment 1
[0016] (1) Ingredients: The chemical composition of zinc slag is magnesium oxide 3 wt%, iron oxide 5wt%, zinc oxide 9 wt%, silicon oxide 5wt%, calcium oxide 15wt%, ignition loss 63wt%, zinc slag and carbon powder The ratio of 100:17 by weight is fully mixed to make zinc slag mixture;
[0017] (2) Put the zinc slag mixture in the zinc slag high-temperature treatment furnace and perform high-temperature treatment under the conditions of vacuum, 1200 ° C, and 30 minutes, so that the magnesium oxide, iron oxide, zinc oxide, silicon oxide, calcium oxide, etc. in the zinc slag The main components react with the carbon powder to generate metal magnesium, metal iron, metal zinc, silicon carbide, calcium carbide and other substances, and then separate the above substances.
Embodiment 2
[0019] (1) Ingredients: The chemical composition of zinc slag is magnesium oxide 6 wt%, iron oxide 13wt%, zinc oxide 14wt%, silicon oxide 8wt%, calcium oxide 20wt%, ignition loss 39wt%, zinc slag and carbon powder according to Fully mixed with a weight ratio of 100:32 to make a zinc slag mixture;
[0020] (2) Put the zinc slag mixture in the zinc slag high-temperature treatment furnace and perform high-temperature treatment under the conditions of vacuum, 1500°C, and 110 minutes, so that the magnesium oxide, iron oxide, zinc oxide, silicon oxide, calcium oxide, etc. in the zinc slag The main components react with the carbon powder to generate metal magnesium, metal iron, metal zinc, silicon carbide, calcium carbide and other substances, and then separate the above substances.
Embodiment 3
[0022] (1) Ingredients: The chemical composition of zinc slag is magnesium oxide 8wt%, iron oxide 22wt%, zinc oxide 29wt%, silicon oxide 12wt%, calcium oxide 24wt%, loss on ignition 5wt%, zinc slag and carbon powder according to The weight ratio is 100:36 and fully mixed to make zinc slag mixture;
[0023] (2) Put the zinc slag mixture in the zinc slag high-temperature treatment furnace and conduct high-temperature treatment under the conditions of vacuum, 1800°C, and 180 minutes, so that the magnesium oxide, iron oxide, zinc oxide, silicon oxide, calcium oxide, etc. in the zinc slag The main components react with the carbon powder to generate metal magnesium, metal iron, metal zinc, silicon carbide, calcium carbide and other substances, and then separate the above substances.
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Abstract
A comprehensive utilization method of zinc slag is characterized by comprising the following steps: fully mixing zinc slag with carbon powder according to a weight ratio of 100:(17 to 36) so as to obtain a zinc slag mixed material; placing the zinc slag mixed material in a high-temperature processing furnace to carry out a high-temperature treatment for 30 to 180 minutes in vacuum environment and at a temperature of 1200 to 1800 DEG C so as to make main components in the zinc slag such as magnesium oxide, ferric oxide, zinc oxide, silicon oxide and calcium oxide carry out reactions with carbon powder to convert the oxides into metal magnesium, metal iron, metal zinc, silicon carbide, and calcium carbide, and finally separating the obtained substances. The comprehensive utilization method is mainly used to process industrial zinc slag, reduces the production cost and pollution to the environment, is economic and environment-friendly, and converts zinc slag into products with a high additional value.
Description
technical field [0001] The invention relates to a comprehensive utilization method of zinc slag, which belongs to the technical field of chemical engineering. Background technique [0002] Zinc slag is the waste after the slag discharged from the zinc smelting process is extracted from the slag. Hundreds of thousands of tons of zinc slag waste is discharged in my country every year. The current treatment method for zinc slag is to stack it in a certain area for centralized discharge, resulting in waste of resources and environmental pollution. The current method is to produce construction cement with low added value. Contents of the invention [0003] The purpose of the present invention is to provide a comprehensive utilization method that can overcome the above-mentioned defects, utilize industrial waste materials, turn waste into treasure, and solve zinc slag resource regeneration and zinc slag pollution at one time. Its technical scheme is: [0004] A method for comp...
Claims
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