Dry powder mortar of mine tailings

A technology of dry powder mortar and tailings, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of difficult quality assurance, waste of resources, dust pollution, etc. The effect of protecting the ecological environment

Inactive Publication Date: 2009-10-21
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide an environment-friendly dry powder mortar for the disadvantages of difficult quality assurance, dust pollution and waste of resources in the traditional on-site mortar mixing method in t

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The tailings dry powder mortar of the present invention comprises the following components in parts by weight: 10 parts of less-clinker Portland cement, 20 parts of river sand, 50 parts of copper tailings sand, and 0.5 part of a water-retaining thickener.

[0025] The less-clinker Portland cement of the present invention is made of the following components in parts by weight: 23 parts of Portland cement clinker, 35 parts of slag, 35 parts of steel slag, 5 parts of anhydrous gypsum, 1.5 parts of sodium sulfate, naphthalene series 0.5 parts of water reducing agent.

[0026] The water-retaining thickener of the present invention is made of the following components in parts by weight: 15 parts of calcium formate, 25 parts of naphthalene-based water reducer; 30 parts of polyethylene vinyl acetate redispersible latex powder, methyl hydroxypropyl Base cellulose ether 3 parts.

[0027] The river sand described in the present invention is coarse sand or medium coarse sand, the ...

Embodiment 2

[0036] The tailings dry powder mortar of the invention comprises the following components in parts by weight: 20 parts of Portland cement with less clinker, 25 parts of river sand, 40 parts of copper tailings sand, and 1.0 part of water-retaining thickener.

[0037] The less-clinker Portland cement of the present invention is made of the following components in parts by weight: 15 parts of Portland cement clinker, 20 parts of slag, 20 parts of steel slag, 4 parts of anhydrous gypsum, 0.1 part of sodium sulfate, naphthalene series 0.1 parts of water reducing agent.

[0038] The water-retaining thickener of the present invention is made of the following components in parts by weight: 40 parts of calcium formate, 15 parts of naphthalene-based water reducer; 50 parts of polyethylene vinyl acetate redispersible latex powder, and 20 parts of wood fiber .

[0039] The river sand described in the present invention is coarse sand or medium coarse sand, the fineness modulus is between ...

Embodiment 3

[0050] The tailings dry powder mortar of the invention comprises the following components in parts by weight: 30 parts of less-clinker portland cement, 30 parts of river sand, 60 parts of copper tailings sand, and 1.5 parts of water-retaining thickener.

[0051] The less-clinker Portland cement of the present invention is made of the following components in parts by weight: 20 parts of Portland cement clinker, 40 parts of slag, 40 parts of steel slag, 6 parts of anhydrous gypsum, 3 parts of sodium sulfate, naphthalene series 0.3 parts of water reducing agent.

[0052] The water-retaining thickener of the present invention is made of the following components in parts by weight: 25 parts of calcium formate, 40 parts of naphthalene-based water reducer; 70 parts of polyethylene vinyl acetate redispersible latex powder, and 10 parts of wood fiber , 1 part of methyl hydroxypropyl cellulose ether.

[0053]The river sand described in the present invention is coarse sand or medium coa...

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Abstract

The invention relates to dry powder mortar of mine tailings, which comprises the following components in portion by weight: 40 to 60 portions of copper tailing sand or iron tailing sand, 20 to 30 portions of river sand, 10 to 30 portions of low-clinker silicate cement, and 0.5 to 1.5 portions of water-retaining thickening agent. The dry powder mortar is suitable for masonry, plastering, ground and common waterproof engineering. By using the low-clinker cement to replace the prior common silicate cement and using the tailing sand to partially replace the river sand, the dry powder mortar reduces the discharge of carbon dioxide and the consumption of sand river resources, realizes the resource utilization of solid wastes such as mine refuses, steel slag, tailings and the like, and protects the ecological environment.

Description

technical field [0001] The invention relates to tailings dry powder mortar suitable for masonry, plastering, ground and common waterproofing projects. Background technique [0002] Mortar is an important building material that has been used for thousands of years. With the development of society, a large number of municipal construction, large-scale infrastructure construction, construction of water conservancy, implementation of real estate projects, etc., the demand for construction mortar is increasing day by day. [0003] For a long time, the production of mortar has been using the on-site mixing construction method. With the development of construction technology, the requirements for construction efficiency and construction quality continue to increase, and the shortcomings of on-site mortar mixing are gradually revealed. On the one hand, it is reflected in the randomness of the proportioning design, which seriously affects the intrinsic quality of the material; inac...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B18/12C04B14/06
CPCC04B2103/0014C04B2103/302C04B2103/0016C04B2111/27C04B28/04Y02W30/91C04B14/068C04B18/12C04B18/141C04B18/142C04B22/142C04B22/143C04B2103/44C04B18/26C04B24/04C04B24/226C04B24/2629C04B24/383C04B24/2641
Inventor 赵风清曹素改陈建波张志国高玲艳李倩李豪李永肖程琳咏刘洪杰
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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