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Mine underground filling mortar

A technology of mortar and mine, which is applied in the field of filling mortar in mines, can solve the problems of high cost, raw material mining environment and natural resource impact, and achieve the effects of low cost, protection of natural resources and ecological environment, and good fluidity

Inactive Publication Date: 2020-05-26
安徽马钢嘉华新型建材有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In today's mature mine filling products, cement or cement clinker is mostly used to prepare cementitious materials, but the cost of cement or cement clinker to prepare cementitious materials is relatively high, and the exploitation of raw materials has caused serious damage to the environment and natural resources. influences

Method used

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  • Mine underground filling mortar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 15 parts of iron tailings powder, 60 parts of fine slag powder, 15 parts of quicklime and 10 parts of desulfurized ash and mix them uniformly to obtain the cementitious material for filling mortar in the mine. Mix the cementitious material filled underground in the above-mentioned mine with water and iron tailings in a ratio of 1:2:4 to make filling mortar.

[0030] Put the prepared filling mortar into a mold of 40mm×40mm×160mm for molding, put the formed test piece in an environment with a temperature of about 20°C and a relative humidity of not less than 50% for curing, remove the mold after 24 hours, and remove the The molded specimens were placed in warm water at about 20°C for hydroculture.

Embodiment 2

[0032] Weigh 25 parts of iron tailings powder, 45 parts of fine slag powder, 20 parts of quicklime and 10 parts of desulfurized ash and mix evenly to obtain the cementitious material for filling mortar in the mine. Mix the cementitious material filled underground in the above-mentioned mine with water and iron tailing sand in a ratio of 1:2:6 to make filling mortar.

[0033] Put the prepared filling mortar into a mold of 40mm×40mm×160mm for molding, put the formed test piece in an environment with a temperature of about 20°C and a relative humidity of not less than 50% for curing, remove the mold after 24 hours, and remove the The molded specimens were placed in warm water at about 20°C for hydroculture.

Embodiment 3

[0035] Weigh 15 parts of iron tailings powder, 60 parts of fine slag powder, 15 parts of quicklime and 10 parts of desulfurized ash and mix them uniformly to obtain the cementitious material for filling mortar in the mine. Mix the cementitious material filled in the underground of the above mine with water and iron tailing sand in a ratio of 1:2.5:8 to make filling mortar.

[0036] Put the prepared filling mortar into a mold of 40mm×40mm×160mm for molding, put the formed test piece in an environment with a temperature of about 20°C and a relative humidity of not less than 50% for curing, remove the mold after 24 hours, and remove the The molded specimens were placed in warm water at about 20°C for hydroculture.

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Abstract

The invention belongs to the technical field of building materials, and particularly relates to mine underground filling mortar which comprises a cementing material, water and fine aggregate in a massratio of 1: (2.0-2.6): (4-10). The cementing material comprises the following components in parts by weight: 14-27 parts of iron tailing powder, 45-62 parts of superfine slag powder, 12-24 parts of quick lime and 3-12 parts of desulfurized fly ash. The fine aggregate is all-iron tailing sand, and the particle size of the all-iron tailing sand is 0.15-2.36 mm. The activity and potential hydraulicity of the iron tailing powder and the superfine slag powder are utilized; relatively high coagulability and hardness are realized; quick lime is used for providing an alkaline environment for slag hydrolysis, so that an acid film layer and an irregular chemical chain structure on the surface of the slag can be destroyed, and ideal cementitious materials are prepared; and meanwhile, the iron tailing sand with relatively hard performance is solidified to prepare the mortar, and the mortar has good fluidity within a certain period of time, so that pipeline transportation in engineering application can be realized.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a mine underground filling mortar. Background technique [0002] Iron tailings are the waste after beneficiation and are the main component of solid waste residue. Iron tailings with large fineness occupy a large area of ​​land space and cause pollution to the land environment after being discarded. Fine iron tailings powder is not conducive to open-air accumulation, and may float with the wind, invade rivers, and cause a certain degree of pollution to air and river water. Slag powder is also a kind of industrial waste, and its fineness is small, which is not conducive to transportation and storage. Iron tailings and slag fine powder are discharged up to 500 million tons per year in my country. How to effectively realize the reuse of iron tailings and slag fine powder resources is a serious problem in resource utilization in my country at present. [0003] In today's...

Claims

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Application Information

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IPC IPC(8): C04B28/08
CPCC04B28/082C04B2111/00724C04B2201/50C04B18/12C04B18/141C04B18/105C04B22/064
Inventor 赵鲁卿于峰陈太遥方圆武萍徐世楠杨雷
Owner 安徽马钢嘉华新型建材有限公司
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