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Mineral processing method for efficiently recycling iron blast furnace ash

A technology of recycling and beneficiation methods, which is applied in the direction of furnaces, rotary drum furnaces, furnace types, etc., can solve the problems of insufficient environmental protection, inability to efficiently and comprehensively recover iron, zinc, and slag, and reduce the pressure on environmental protection , High resource recycling rate, good beneficiation environment

Inactive Publication Date: 2021-03-09
赣州金环磁选科技装备股份有限公司
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  • Description
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  • Application Information

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Problems solved by technology

[0004] Aiming at the problems that the existing technology is not environmentally friendly enough, iron and zinc elements cannot be efficiently and comprehensively recovered, and carbon resources and recycled slag cannot be effectively utilized, the present invention provides a mineral processing method for efficient recycling and utilization of iron blast furnace ash

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  • Mineral processing method for efficiently recycling iron blast furnace ash
  • Mineral processing method for efficiently recycling iron blast furnace ash

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Embodiment Construction

[0028] In order to further understand the content, features and effects of the present invention, the following examples are given, and detailed descriptions are given below with reference to the accompanying drawings.

[0029] The structure of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0030] A beneficiation method for efficient iron blast furnace ash recycling and utilization, the specific steps are as follows:

[0031] S101. Send the washed sieve material into the ball mill for wet grinding, and the ground slurry enters the hydrocyclone for classification, and the sand settling material of the cyclone is sent to the ball mill for regrinding, and the overflow material of the cyclone After the mixing tank is adjusted to a pulp with a concentration of 20% to 25%, the pulp enters the cylindrical slag separation screen for slag separation treatment, and is used as magnetic separation for selection and preparation;

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Abstract

The invention discloses a mineral processing method for efficiently recycling iron blast furnace ash. The method comprises the steps of ball milling, grading, size mixing, rotary kiln enrichment and the like, a two-section vertical ring pulsating high-gradient magnetic separator is adopted for magnetic separation so that the purity of iron-containing valuable metal elements in magnetic materials is greatly improved, zinc elements are enriched, carbon resources play a role of fuel in a rotary kiln, reasonable utilization of the carbon resources is guaranteed, tailings produced by the rotary kiln are subjected to magnetic separation and recovery again to obtain qualified iron ore concentrate, and slag obtained after magnetic separation is dehydrated and then serves as a building material. The mineral processing technological process is simple, the resource recycling rate is high, the mineral processing environment is good, economic benefits are high, tailings are avoided in the whole harmless production process, economic benefits are increased for the iron and steel industry, and the environmental protection pressure is reduced.

Description

technical field [0001] The invention belongs to the field of blast furnace ash recovery and utilization, in particular to a beneficiation method for recycling and utilization of high-efficiency iron blast furnace ash. Background technique [0002] Blast furnace ash is mainly composed of iron, carbon, zinc, etc., and contains volatile fluorine, chlorine and other harmful impurities. It is composed of particles produced by the violent reaction between blast furnace charge powder and high temperature zone, and is one of the main solid wastes discharged by iron and steel enterprises. The earliest method is to dump the blast furnace ash into the field or landfill without any treatment. The harmful metals contained in it will be slowly leached under the action of rainwater, polluting the soil, environment, rivers, animals and plants, and finally causing harm to humans. . [0003] With the development of economy and society, the requirements for energy saving and emission reducti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/02C22B1/02C22B19/38C22B19/30B03B9/04B03C1/025
CPCC22B7/02C22B1/02C22B19/38C22B19/30B03B9/04B03C1/025Y02P10/20
Inventor 崔振红
Owner 赣州金环磁选科技装备股份有限公司
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