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A method for recovering valuable elements in high-sulfur nickel-molybdenum ore smelting waste residue

A high-sulfur nickel-molybdenum and valuable element technology is applied in the field of recovering valuable elements in high-sulfur nickel-molybdenum ore smelting waste residue, and can solve the problems of easy leakage of toxic gas, low selenium recovery rate, environmental pollution and the like, and achieve low production cost. , Easy to operate, solve the effect of low recovery rate

Active Publication Date: 2017-11-17
CHANGSHA RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional oxidative roasting or sulfated roasting process, there are low selenium recovery rate, high energy consumption, and the generation of SO 2 , SeO 2 and As 2 o 3 Poisonous gas, toxic gas is easy to leak, serious environmental pollution and other disadvantages

Method used

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  • A method for recovering valuable elements in high-sulfur nickel-molybdenum ore smelting waste residue
  • A method for recovering valuable elements in high-sulfur nickel-molybdenum ore smelting waste residue
  • A method for recovering valuable elements in high-sulfur nickel-molybdenum ore smelting waste residue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A method for recovering valuable elements in high-sulfur nickel-molybdenum ore smelting waste slag of the present invention, such as figure 1 shown, including the following steps:

[0058] (1) Crushing, ball milling and screening high-sulfur nickel-molybdenum ore smelting waste residue to obtain smelting waste residue with a particle size of less than 0.1mm, and then using sulfonated kerosene as a solvent, under the conditions of desulfurization temperature of 140°C and desulfurization time of 30min Carry out hot filtration desulfurization, filter while hot, and separate solid and liquid to obtain desulfurization waste residue and sulfonated kerosene loaded with elemental sulfur. After cooling the sulfonated kerosene loaded with elemental sulfur to room temperature, separate sulfonated kerosene to obtain elemental sulfur, elemental sulfur The yield rate is 92.74%, and the product meets the requirements of the national standard;

[0059] (2) The desulfurization waste re...

Embodiment 2

[0065] A method for recovering valuable elements in high-sulfur nickel-molybdenum ore smelting waste slag of the present invention comprises the following steps:

[0066] (1) Crushing, ball milling and screening high-sulfur nickel-molybdenum ore smelting waste residue to obtain smelting waste residue with a particle size of less than 0.1 mm, and then using sulfonated kerosene as a solvent, under the conditions of desulfurization temperature of 145 °C and desulfurization time of 40 minutes Carry out hot filtration desulfurization, filter while hot, and separate solid and liquid to obtain desulfurization waste residue and sulfonated kerosene loaded with elemental sulfur. After cooling the sulfonated kerosene loaded with elemental sulfur to room temperature, separate sulfonated kerosene to obtain elemental sulfur, elemental sulfur The yield rate is 92.81%, and the product meets the requirements of the national standard;

[0067] (2) The desulfurization waste residue obtained afte...

Embodiment 3

[0073] A method for recovering valuable elements in high-sulfur nickel-molybdenum ore smelting waste slag of the present invention comprises the following steps:

[0074] (1) Crushing, ball milling and screening high-sulfur nickel-molybdenum ore smelting waste residues to obtain smelting waste residues with a particle size of less than 0.1 mm, and then using sulfonated kerosene as a solvent at a desulfurization temperature of 130°C and a desulfurization time of 30 minutes Carry out hot filtration desulfurization, filter while hot, and separate solid and liquid to obtain desulfurization waste residue and sulfonated kerosene loaded with elemental sulfur. After cooling the sulfonated kerosene loaded with elemental sulfur to room temperature, separate sulfonated kerosene to obtain elemental sulfur, elemental sulfur The yield rate is 91.96%, and the product meets the requirements of the national standard;

[0075] (2) The desulfurization waste residue obtained after the desulfuriza...

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Abstract

The invention discloses a method for recycling valuable elements in high-sulfur nickel-molybdenum ore smelting waste. The method includes the first step of pretreatment and desulfurization of smelting waste, the second step of leaching of arsenic and selenium, the third step of extraction of selenium, the fourth step of preparation of arsenic sulfide, the fifth step of oxidative desulfurization of arsenic sulfide, and the sixth step of preparation of arsenic trioxide. The method solves the key technical problems that in a traditional process, the recycling rate of target elements is low, the energy consumption is high, poisonous gas such as SO2, SeO2 and As2O3 is likely to be generated and leak, dust flies, and environmental pollution is caused; the metallurgical purposes of low carbon and environmental friendliness are achieved; selenium is recycled, arsenic and sulfur in smelting waste are also recycled, the influence of arsenic on the environment is fundamentally eliminated, elemental sulfur, selenium powder and arsenic trioxide products meeting national standard requirements are synthesized, waste is turned into wealth, comprehensive utilization of secondary waste resources is achieved, and thus the method has good economic benefits, environmental protection benefits and social benefits.

Description

technical field [0001] The invention belongs to a hydrometallurgical method for selenium, sulfur and arsenic in nickel-molybdenum ore smelting waste residue, in particular to a method for recovering valuable elements in high-sulfur nickel-molybdenum ore smelting waste residue. Background technique [0002] Nickel-molybdenum ore is a multi-metal composite ore rich in nickel and molybdenum, which is widely distributed in Guizhou, Hunan, Yunnan and Zhejiang in China. According to estimates by Peking University, nickel-molybdenum ore contains 52.2 million tons of molybdenum, 45.15 million tons of nickel, 510 tons of gold, 10,800 tons of silver, 480 tons of palladium, and 501 tons of rare metals. Due to the huge reserves of nickel-molybdenum ore and the high content of valuable metals nickel and molybdenum (Ni: 0.7% to 7.7%, Mo: 2% to 11%), metallurgists at home and abroad have attracted great attention. Therefore, it is of great significance to develop and utilize nickel-molybd...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B17/033C01B19/02C01G28/00
CPCC01B17/033C01B19/02C01G28/005
Inventor 侯晓川杨润德李贺
Owner CHANGSHA RES INST OF MINING & METALLURGY