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Mine discarded tailing self-leveling mortar and preparation method thereof

A technology for self-leveling mortar and waste tailings, applied in the field of building materials and new materials, can solve the problems of destroying natural ecology, large resources, consumption, etc., and achieve the effect of protecting natural ecology and reducing mining demand.

Inactive Publication Date: 2016-12-07
中材键合科技(蓬莱)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the main aggregate of existing self-leveling mortar is finished standard sand, which requires a large number of mining, processing and other processing steps. The process consumes a lot of resources and destroys natural ecology, increasing the cost of self-leveling raw materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Collect gold tailings or iron ore tailings, add layered sorting, and obtain 3 grades of tailings powder of 30-60 mesh, 60-80 mesh, and 80-120 mesh after screening, according to the ratio of 1:2:1 After mixing and grading, graded tailings are obtained; take 47 kg of the above-mentioned graded tailings, 16 kg of Portland cement, 24 kg of sulfur-aluminum cement, 1.5 kg of gypsum, 1.5 kg of silica fume powder, 9 kg of heavy calcium powder and bond Add 1.14 kg of gelling activator to physical mixing, mix for 25 minutes and then discharge, and use a packing machine to pack. After on-site construction testing, the product has fast flow speed and good compressive strength.

Embodiment 2

[0023] Collect nickel ore tailings or copper tailings, add layered sorting, and obtain 3 grades of tailings powder of 30-60 mesh, 60-80 mesh, and 80-120 mesh after screening, according to the ratio of 1:2:1 After mixing and grading, the graded tailings are obtained; take 49 kg of the above-mentioned graded tailings, 15.5 kg of Portland cement, 23 kg of sulfur-aluminum cement, 2 kg of gypsum, 2 kg of silica fume powder, 7.5 kg of heavy calcium powder and bond Add 1.17 kg of gelling activator to physical mixing, mix for 25 minutes and then discharge, and use a packing machine to pack. After on-site construction testing, the product has a fast flow rate and good compressive strength.

Embodiment 3

[0025] Collect nickel ore tailings or copper ore tailings or granite tailings, add layered screening machine, and obtain 3 grades of tailings powder of 30-60 mesh, 60-80 mesh, and 80-120 mesh after screening, according to 1:2 : 1 ratio to obtain graded tailings after mixing and grading; get 51 kg of above-mentioned graded tailings, 15 kg of Portland cement, 22 kg of sulfur-aluminum cement, 2.5 kg of gypsum, 2.5 kg of silica fume powder, heavy calcium powder Add 6 kg and 2 kg of bonded gelling activator to physical mixing, mix for 25 minutes and then discharge, and use a packing machine to pack. After on-site construction testing, the product has a fast flow rate and good compressive strength.

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PUM

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Abstract

The invention belongs to the technical field of building materials, and particularly relates to a mine discarded tailing self-leveling mortar and a preparation method thereof. The mine discarded tailing self-leveling mortar is characterized by being mainly prepared from the following raw materials in parts by weight, 470-510 parts of mine discarded tailings, 150-160 parts of Portland cement, 220-240 parts of sulfur-aluminum cement, 15-25 parts of plaster, 15-25 parts of silica fume, 60-90 parts of heavy calcium powder, 10-20 parts of functional auxiliary materials. In preparation of the mine discarded tailing self-leveling mortar, mine discarded tailing resources are reused in the physical process of screening, grading, stirring, sub-packaging and the like, environmental pollution is decreased, and the development requirement of modern society is met. Waste is reused, the resources are saved, the whole production process is free from water, steam and sintering, waste water, waste gas and waste residues are avoided, secondary pollution is avoided, environments are protected, and the mine discarded tailing self-leveling mortar is suitable for wide popularization and application.

Description

technical field [0001] The invention belongs to the technical field of building materials and new materials, and in particular relates to a mine waste tailings self-leveling mortar and a preparation method thereof. Background technique [0002] my country is rich in mineral resources. During the mining process, a large number of abandoned mine tailings have been accumulated over time. Due to the large scale of mine mining in my country, the total amount of abandoned mine tailings is on the rise. Due to the large number of abandoned mine tailings The accumulation destroys the surface land, loses the natural landscape and vegetation, pollutes the surface water and groundwater, and causes serious damage to the ecological environment. However, the disposal of abandoned mine tailings has the characteristics of high cost and difficulty, and has always been a long-standing problem. [0003] Self-leveling mortar is a dry-mixed powdery material composed of standard sand, cement, gyps...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14
CPCC04B28/14C04B2111/00017C04B2111/343C04B2201/50C04B18/12C04B7/02C04B7/32C04B18/146C04B14/28
Inventor 郑世清周波柳灵燕廉坤梁泽夏
Owner 中材键合科技(蓬莱)有限公司