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Process for extracting iron from hot slag generated by copper smelting

A copper smelting and slag technology, which is applied in the field of copper smelting hot slag iron extraction process, can solve the problems of low production cost and short reaction time, and achieve the effect of maximizing resource utilization

Inactive Publication Date: 2018-02-16
铜陵市业永兴工贸有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Based on the technical problems existing in the background technology, the present invention proposes a copper smelting hot slag iron extraction process, which has short reaction time, high productivity, low production cost, strong raw material adaptability, large processing capacity, environmental friendliness, and high economic benefits , It can effectively solve the problems of environmental pollution and efficient recycling of heat energy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of copper smelting hot state slag iron extraction technology that present embodiment proposes, comprises the following steps:

[0027] S1, the slag is sent into the wet sand blasting machine through the belt conveyor to be fully broken into fine slag, and then the fully broken fine slag is sent to the sawtooth wave jig, and the sawtooth wave jig will reduce the particulate matter less than 170 mesh It is discharged to the shaker through the pipeline, and the particulate matter larger than 170 mesh is directly discharged to the slag stacking area for secondary grinding. There are 12 powerful electromagnet plates under the shaker. When the particles pass through, Fe 3 o 4 Adsorbed by the electromagnet plate, after the screening is completed, the electromagnet is powered off to recover Fe 3 o 4 ;

[0028] S2, for recovered Fe 3 o 4 Then perform magnetic separation to remove Fe 3 o 4 Mixed silicon dioxide and calcium oxide in the medium, repeat the magnetic se...

Embodiment 2

[0034] A kind of copper smelting hot state slag iron extraction technology that present embodiment proposes, comprises the following steps:

[0035] S1, the slag is sent into the wet sand blasting machine through the belt conveyor to be fully broken into fine slag, and then the fully broken fine slag is sent to the sawtooth wave jig, and the sawtooth wave jig will reduce the particulate matter less than 170 mesh It is discharged to the shaker through the pipeline, and the particulate matter larger than 170 mesh is directly discharged to the slag stacking area for secondary grinding. There are 13 powerful electromagnet plates under the shaker. When the particles pass through, Fe 3 o 4 Adsorbed by the electromagnet plate, after the screening is completed, the electromagnet is powered off to recover Fe 3 o 4 ;

[0036] S2, for recovered Fe 3 o 4 Then perform magnetic separation to remove Fe 3 o 4 Mixed silicon dioxide and calcium oxide, repeat the magnetic separation opera...

Embodiment 3

[0042] A kind of copper smelting hot state slag iron extraction technology that present embodiment proposes, comprises the following steps:

[0043] S1, the slag is sent into the wet sand blasting machine through the belt conveyor to be fully broken into fine slag, and then the fully broken fine slag is sent to the sawtooth wave jig, and the sawtooth wave jig will reduce the particulate matter less than 170 mesh It is discharged to the shaker through the pipeline, and the particulate matter larger than 170 mesh is directly discharged to the slag stacking area for secondary grinding. There are 15 powerful electromagnet plates under the shaker. When the particles pass through, Fe 3 o 4 Adsorbed by the electromagnet plate, after the screening is completed, the electromagnet is powered off to recover Fe 3 o 4 ;

[0044] S2, for recovered Fe 3 o 4 Then perform magnetic separation to remove Fe 3 o 4 Mixed silicon dioxide and calcium oxide in the medium, repeat the magnetic se...

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PUM

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Abstract

The invention discloses a process for extracting iron from hot slag generated by copper smelting. The process comprises the following steps that the slag is delivered into a wet type sanding machine through a belt conveyor, so that the slag is completely crushed into fine slag, then the fine slag which is completely crushed is delivered into a sawtooth wave jigging machine, the sawtooth wave jigging machine discharges particulate matter with the size being smaller than 170 grits into a shaking table through a pipe and directly discharges particulate matter with the size being greater than 170grits into a slag piling-up area, so that secondary grinding is conducted, 8-15 powerful electromagnet plates are arranged below the shaking table, when the particulate matter passes, Fe3O4 is adsorbed by the electromagnet plates, electromagnets are powered off after screening is completed, and the Fe3O4 is recycled; and 2, magnetic separation is conducted on the recycled Fe3O4, so that silicon dioxide and calcium oxide mixed in the Fe3O4 are removed, and magnetic separation operation is repeated 3-6 times, so that the process is completed. The process is novel in concept, short in reaction time, high in production rate, low in production cost, high in raw material adaptability, large in treatment capacity, environmentally friendly, high in economic benefit and capable of effectively solving the problem of environmental pollution and efficiently recycling heat energy.

Description

technical field [0001] The invention relates to the technical field of non-blast furnace ironmaking and resource comprehensive utilization, in particular to a process for extracting iron from copper smelting hot slag. Background technique [0002] Blast furnace ironmaking is the main method of producing steel at present. After long-term development, blast furnace technology has been very mature. The disadvantage of the blast furnace ironmaking method is the strong dependence on metallurgical coke. With the increasingly scarce coke resources, the price of metallurgical coke is getting higher and higher, but the abundant and cheap non-coking coal resources cannot be fully utilized in ironmaking production. And with the improvement of blast furnace intensified smelting technology, the total amount of pollutant discharge continues to increase, which is one of the main sources of domestic pollutant discharge. [0003] In order to change the difficulties faced by blast furnace i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/04C21B13/14
CPCC21B13/0073C21B13/14C22B7/001C22B7/04Y02P10/20
Inventor 胡明海
Owner 铜陵市业永兴工贸有限责任公司