Copper smelting typical waste slag coordinated curing/stabilizing treatment method

A technology for stabilization treatment and copper smelting, applied in the removal of solid waste, etc., can solve the problems of low content of valuable metals and poor economic benefits of recovering valuable metals, and achieve the effects of improving overall strength, inhibiting expansion and reducing dosage.

Active Publication Date: 2018-07-13
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because the flotation slag contains highly toxic arsenic and the content of valuable metals (Zn, Pb, etc.) is low, the economic benefit of recovering valuable metals from flotation slag is poor

Method used

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  • Copper smelting typical waste slag coordinated curing/stabilizing treatment method

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Embodiment 1

[0032] Embodiment 1: The typical copper smelting waste slag synergistic solidification / stabilization treatment method of the present invention, the specific operation is as follows:

[0033] Dry the flotation slag and neutralization slag to constant weight, and crush until the particle size is 80-100 mesh, and set aside.

[0034] CaO (25%), Al 2 o 3 (10%) and flotation slag (65%) were uniformly mixed, kept in a furnace at 1350° for 35 minutes, and then the roasted slag was placed in air to cool to obtain modified flotation slag.

[0035] Mix the modified flotation slag (70%), the neutralization slag (10%) and the activator (20%), and then ball mill, the ball milling time is 150min, and the particle size is controlled at ≤ 80μm to obtain the modified flotation slag base gelling material. Then the gypsum slag was dried to a moisture content of 20% and crushed to 300 mesh. Then the modified flotation slag-based cementitious material (70%) is uniformly mixed with gypsum slag (...

Embodiment 2

[0039] Embodiment 2: The typical copper smelting waste slag synergistic solidification / stabilization treatment method of the present invention, the specific operation is as follows:

[0040] Dry the flotation slag and neutralization slag to constant weight, and crush until the particle size is 80-100 mesh, and set aside.

[0041] CaO (25%), Al 2 o 3 (10%) and flotation slag (65%) were uniformly mixed, kept in a furnace at 1350° for 35 minutes, and then the formed slag phase was placed in the air for air cooling to obtain modified flotation slag.

[0042] Mix the modified flotation slag (70%), the neutralization slag (10%) and the activator (20%), and then ball mill, the ball milling time is 150min, and the particle size is controlled at ≤ 80μm to obtain the modified flotation slag base gelling material. Then the gypsum slag was dried to a moisture content of 20% and crushed to 300 mesh. Evenly mix the modified flotation slag-based gelling material (60%) with gypsum slag (4...

Embodiment 3

[0046] Embodiment 3: The typical copper smelting waste slag synergistic solidification / stabilization treatment method of the present invention, the specific operation is as follows:

[0047] Dry the flotation slag and neutralization slag to constant weight, and crush until the particle size is 80-100 mesh, and set aside.

[0048] CaO (25%), Al 2 o 3 (10%) and flotation slag (65%) were uniformly mixed, kept in a furnace at 1350° for 35 minutes, and then the formed slag phase was placed in the air for air cooling to obtain modified flotation slag.

[0049] Mix the modified flotation slag (70%), the neutralization slag (10%) and the activator (20%), and then ball mill, the ball milling time is 150min, and the particle size is controlled at ≤ 80μm to obtain the modified flotation slag base gelling material. Then the gypsum slag was dried to a moisture content of 20% and crushed to 300 mesh. Evenly mix the modified flotation slag-based cementitious material (50%) with gypsum sl...

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Abstract

The invention discloses a copper smelting typical waste slag coordinated curing/stabilizing treatment method. According to the method, copper smelting industry typical waste slag (flotation slag, neutralization slag and gypsum slag) serves as the raw material, and a small number of exciting agents are adopted for assisting. A finished product is prepared through the technologies of flotation slagmodification pretreatment, crushing, ball grinding, burdening, injection molding, forming, curing and the like. By means of the method, the waste resource in the copper smelting industry is sufficiently utilized. The problem about curing/stabilizing of typical waste slag containing arsenic and other toxic metals in the copper smelting industry is solved; and meanwhile waste can be reutilized, andthe environment and economic benefits are obvious.

Description

technical field [0001] The invention relates to a method for synergistic solidification / stabilization treatment of typical copper smelting waste slag, which is a new technology for harmless treatment of typical copper smelting waste slag and belongs to the field of industrial solid waste treatment. Background technique [0002] China is the world's largest producer and consumer of arsenic. 70% of the world's proven reserves of arsenic resources are concentrated in China, and the annual discharge of arsenic exceeds 40,000 tons. The copper smelting industry is the industry with the largest output in the heavy non-ferrous metal smelting industry (copper, lead, zinc, nickel, cobalt, tin, antimony, mercury), and its output in 2013 accounted for 39.4% of the heavy non-ferrous metal smelting industry. The emission of arsenic in the copper smelting industry is also the largest, accounting for 80% of the total emission in the color industry. During the pyrometallurgical treatment of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B09B5/00
CPCB09B3/00B09B5/00
Inventor 闵小波柯勇刘德刚柴立元梁彦杰王云燕史美清李辕成
Owner CENT SOUTH UNIV
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