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Method for generating cement clinker by taking gold tailing slag as raw material

A technology for cement clinker and tailings slag, applied in the direction of cement production and process efficiency improvement, can solve problems such as hidden safety hazards, harm to the ecological environment, fine tailings particle size, etc., and achieve cost saving, low cost, and sustainable development. The effect of circular economy

Active Publication Date: 2021-12-24
浙江红狮环保股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, the main components of tailings are sulfate and silicate, accompanied by cyanide, copper, zinc, iron, antimony, tungsten and other mineral elements. At the same time, tailings have the characteristics of fine particle size and large quantity. At present, most gold mining enterprises The method of building tailings dams to collect gold tailings is basically adopted, which cannot truly realize large-scale recycling and recycling, which seriously endangers the ecological environment and brings potential safety hazards. The environmental pressure is increasing day by day

Method used

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  • Method for generating cement clinker by taking gold tailing slag as raw material
  • Method for generating cement clinker by taking gold tailing slag as raw material
  • Method for generating cement clinker by taking gold tailing slag as raw material

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Effect test

Embodiment 1

[0031] A kind of cement clinker generation method that gold tailings slag is raw material, its scheme is:

[0032] S1, mix 800kg of gold tailings slag with 800kg of water, stir evenly and adjust into slag slurry;

[0033] S2, adsorption, add 20kg adsorption phenolic resin in slag slurry, filter out adsorption phenolic resin after stirring and absorbing 150min, remove most of cyanide, described adsorption phenolic resin is prepared according to the following method:

[0034]Add 0.1kg of titanium dioxide to 10kg of 10% aqueous methanol solution, mix and stir for 5 minutes, then add 0.02kg of 2-(chloromethyl)allyltrimethoxysilane, control the temperature to 40°C, stir for 30 minutes and then filter. Dispersed to 8kg of allyl phenolic resin after washing, 0.05kg of 5,10,15,20-tetrakis(4-vinylphenyl)porphyrin, (CAS113477-21-7), 18kg of styrene, 2.1kg In the organic phase obtained by mixing isobutanol evenly, add 2.4 kg of initiator solution after stirring and reacting at 30°C for ...

Embodiment 2

[0042] A kind of cement clinker generation method that gold tailings slag is raw material, its scheme is:

[0043] S1. Mix 900kg of gold tailings slag with 1200kg of water, stir evenly and adjust into slag slurry;

[0044] S2, adsorption, add 25kg adsorption phenolic resin in slag slurry, filter out adsorption phenolic resin after stirring and adsorbing 180min, remove most of cyanide, described adsorption phenolic resin is prepared according to the following method:

[0045] Add 0.25kg of titanium dioxide to 15kg of 25% aqueous methanol solution, mix and stir for 7 minutes, then add 0.05kg of 2-(chloromethyl)allyltrimethoxysilane, control the temperature to 50°C, stir for 45 minutes and then filter. Dispersed to 12kg of allyl phenolic resin after washing, 0.11kg of 5,10,15,20-tetrakis(4-vinylphenyl)porphyrin, (CAS113477-21-7), 22kg of styrene, 2.3kg In the organic phase obtained by mixing isobutanol evenly, add 3.1 kg of initiator solution after stirring and reacting at 40°C ...

Embodiment 3

[0053] A kind of cement clinker generation method that gold tailings slag is raw material, its scheme is:

[0054] S1, mix 1000kg of gold tailings slag with 2000kg of water, stir evenly and adjust into slag slurry;

[0055] S2, adsorption, add 30kg adsorption phenolic resin in slag slurry, filter out adsorption phenolic resin after stirring and absorbing 240min, remove most of cyanide, described adsorption phenolic resin is prepared according to the following method:

[0056] Add 0.4kg of titanium dioxide to 20kg of 40% aqueous methanol solution, mix and stir for 10 minutes, then add 0.08kg of 2-(chloromethyl)allyltrimethoxysilane, control the temperature to 65°C, stir for 60 minutes and then filter. Dispersed to 16kg of allyl phenolic resin after washing, 0.18kg of 5,10,15,20-tetra(4-vinylphenyl) porphyrin, (CAS113477-21-7), 26kg of styrene, 2.6kg In the organic phase obtained by mixing isobutanol evenly, add 3.8 kg of initiator solution after stirring and reacting at 50°C f...

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Abstract

The invention relates to the field of waste treatment, in particular to a method for generating cement clinker by taking gold tailing slag as a raw material. According to the invention, strongly basic anion exchange resin is adopted to adsorb and remove the toxic pollutant cyanide in the gold tailing slag, and inorganic matters are compounded in the strongly basic anion exchange resin, so that the settling property of the resin can be improved, the regeneration process after the resin is used is facilitated, and the purpose of saving the cost is achieved. The resin is ammoniated by triethylamine after chloromethylation, so that the material has higher adsorbability to cyanide, and the effect of removing the cyanide in waste residues is achieved. A cement kiln ingredient is prepared by calcining the removed gold tailing slag together with clay and other raw materials in a lime kiln, and the cement kiln ingredient can be widely applied to cement of various brands. According to the method, the advantages that the gold tailings are large in quantity and low in price and cost are utilized, waste is recycled by utilizing existing resources and cement kiln equipment and utilizing the residual value of the gold tailings, and development of sustainable circular economy is facilitated.

Description

technical field [0001] The invention relates to the field of waste treatment, in particular to a method for generating cement clinker using gold tailings as raw materials. Background technique [0002] With the rapid development of my country's economy and society, and the continuous maturity and improvement of gold smelting technology in recent years, the gold industry has developed rapidly, with a large increase in output, and a continuous decrease in high-quality mineral resources. The grade of smelted ore used is also decreasing year by year. Difficulty, resulting in a substantial increase in the amount of refined gold tailings. Generally, the main components of tailings are sulfate and silicate, accompanied by cyanide, copper, zinc, iron, antimony, tungsten and other mineral elements. At the same time, tailings have the characteristics of fine particle size and large quantity. At present, most gold mining enterprises Basically adopting the method of building tailings da...

Claims

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Application Information

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IPC IPC(8): C04B7/21C04B7/38C04B7/42C08F283/00C08F212/08C08F212/34C08F230/08
CPCC04B7/21C04B7/38C04B7/425C04B7/427C08F283/00C08F212/08C08F212/34C08F230/085Y02P40/10
Inventor 李春萍唐柯赵正斌叶维佳张衡
Owner 浙江红狮环保股份有限公司
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