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A kind of iron ore tailings porous brick and its preparation method

A technology of iron ore tailings and porous bricks, which is applied in the field of tailings treatment, can solve the problems of poor durability and mechanical properties, and achieve the effects of high compressive strength, energy saving, and excellent durability

Active Publication Date: 2020-06-16
LINYI MINING GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of iron ore tailings porous brick and its preparation method in view of the poor durability and mechanical properties of the bricks used in iron ore tailings construction at present, and the problem that the value of iron ore tailings cannot be maximized. The invention not only solves the problem of iron ore tailings stockpiling, but also comprehensively develops and utilizes the iron tailings, turns a large amount of iron tailings accumulated in mines into treasures, and further expands the utilization and value of iron ore tailings. Moreover, the porous brick obtained in the present invention has the advantages of high compressive strength and good durability

Method used

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  • A kind of iron ore tailings porous brick and its preparation method
  • A kind of iron ore tailings porous brick and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A porous iron ore tailing brick, comprising the following components in parts by weight: 60 parts of iron ore tailings, 20 parts of clay, and 20 parts of coal gangue.

[0035] Preferably, the iron ore tailings are tailings after activation treatment. The specific method is: pass the iron ore tailings through a dry magnetic separator to separate the iron concentrate, and separate the remaining tailings at 850 ° C. Calcined for 1.5 hours, and the calcined tailings were cooled rapidly.

[0036] Preferably, the iron ore tailings are single magnetic iron tailings, the sulfur content in the gangue is ≤1.0%, and the gangue has a particle size of 5-10 mm.

[0037] Preferably, the iron ore tailings porous brick also includes 10 parts of construction waste aggregate, which is obtained by sieving construction waste bricks and concrete powder, with a particle size of 5 mm.

[0038] Preferably, the iron ore tailings porous brick also includes 20 parts of iron ore tailings aggregate...

Embodiment 2

[0048] A porous iron ore tailing brick, comprising the following components in parts by weight: 50 parts of iron ore tailings, 20 parts of clay, and 30 parts of coal gangue.

[0049] Preferably, the iron ore tailings are tailings after activation treatment. The specific method is: pass the iron ore tailings through a dry magnetic separator to separate the iron concentrate, and separate the remaining tailings at 850 ° C. Calcined for 1.5 hours, and the calcined tailings were cooled rapidly.

[0050] Preferably, the iron ore tailings are single magnetic iron tailings, the sulfur content in the gangue is ≤1.0%, and the gangue has a particle size of 5-10 mm.

[0051] Preferably, the iron ore tailings porous brick further includes 1-2 parts of hydrated cellulose.

[0052] Preferably, the iron ore tailings porous brick also includes 40 parts of iron ore tailings aggregate, and the iron ore tailings aggregate is prepared by the following method: (1) calcining the iron ore tailings at ...

Embodiment 3

[0062] A porous iron ore tailing brick, comprising the following components in parts by weight: 70 parts of iron ore tailings, 20 parts of clay, and 10 parts of coal gangue.

[0063] Preferably, the iron ore tailings are tailings after activation treatment. The specific method is: pass the iron ore tailings through a dry magnetic separator to separate the iron concentrate, and separate the remaining tailings at 850 ° C. Calcined for 1.5 hours, and the calcined tailings were cooled rapidly.

[0064] Preferably, the iron ore tailings are single magnetic iron tailings, the sulfur content in the gangue is ≤1.0%, and the gangue has a particle size of 5-10mm.

[0065] Preferably, the iron ore tailings porous brick further includes 1-2 parts of hydrated cellulose.

[0066] Preferably, the iron ore tailings porous brick also includes 40 parts of iron ore tailings aggregate, and the iron ore tailings aggregate is prepared by the following method: (1) calcining the iron ore tailings at...

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Abstract

The invention belongs to the technical field of mine tailing processing, and concretely relates to an iron ore mine tailing perforated brick and a preparation method thereof. The method solves the iron ore tailings piling problem, performs comprehensive exploitation utilization on iron mine tailing, changes a lot of iron mine tailings accumulated from mine to valuables, utilization of the iron ore mine tailing and value performance are developed, and the perforated brick has the advantages of high compressive strength and good endurance.

Description

technical field [0001] The invention belongs to the technical field of tailings treatment, and in particular relates to an iron ore tailings porous brick and a preparation method thereof. Background technique [0002] Iron ore tailings are mine waste residues after mining and beneficiation of iron ore. A large number of iron ore tailings have not been developed and utilized, resulting in a large number of tailings encroaching on cultivated land, rivers, and polluting the environment. It is a social public hazard that needs to be solved urgently. The comprehensive utilization of iron ore tailings can not only eliminate the harm of tailings to the environment, but also can be recycled as resources, which has better environmental effects and higher economic benefits. [0003] The construction industry is an industry that consumes a lot of resources. Construction is inseparable from building materials. How to rationally use iron ore tailings to make bricks, increase social wealt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/132C04B38/00
CPCC04B33/132C04B33/1324C04B38/0003C04B2235/5427C04B2235/6021C04B2235/606C04B2235/656C04B2235/6567C04B2235/77C04B2235/96Y02P40/60
Inventor 曹广海
Owner LINYI MINING GRP CO LTD