Molybdenum tailing dry-mixed mortar and application method thereof

A technology of dry-mixed mortar and molybdenum tailings, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of lack of building material resources, environmental pollution, etc., and achieve secondary utilization and circular economy , Improve the utilization rate and ensure the effect of performance

Active Publication Date: 2022-08-09
CHINA MCC17 GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of environmental pollution and safety caused by molybdenum tailings industrial waste residues and the lack of building material resources, the present invention proposes a molybdenum tailings dry-mixed mortar and its application method

Method used

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  • Molybdenum tailing dry-mixed mortar and application method thereof
  • Molybdenum tailing dry-mixed mortar and application method thereof
  • Molybdenum tailing dry-mixed mortar and application method thereof

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Experimental program
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Effect test

Embodiment 1

[0035] The composition of a molybdenum tailings dry-mixed mortar of the present embodiment is as follows: 6 parts of molybdenum tailings silicon micropowder, 8 parts of cement, 3 parts of fly ash, 2 parts of magnesium slag powder, 80 parts of molybdenum tailings sand, redispersible polymer 0.65 part of polymer latex powder, 0.06 part of cellulose ether, 0.08 part of modified starch ether (using S30 1 modified starch ether in this example), 0.03 part of CAS# sodium bentonite, 0.1 part of polycarboxylate water reducing agent, 0.01 part of air agent (existing air-entraining agent can be used, and dodecyl air-entraining agent can be used in this embodiment), 0.1 part of synergist (existing synergist can be used, CJS concrete synergist can be used in this embodiment) ). The composition and particle size distribution of the molybdenum tailing sand used are shown in Table 1 and Table 2 below, respectively.

[0036] Table 1 Mineral composition and chemical composition analysis table ...

Embodiment 2

[0044] The composition and weight ratio of the molybdenum tailings dry-mixed mortar of the present embodiment are as follows: 7 parts of molybdenum tailings silicon micropowder, 9 parts of cement, 3.3 parts of fly ash, 2.2 parts of magnesium slag powder, and 77 parts of molybdenum tailings sand , 0.96 part of redispersible polymer latex powder, 0.07 part of cellulose ether, 0.1 part of modified starch ether, 0.04 part of sodium bentonite, 0.13 part of water reducing agent, 0.02 part of air-entraining agent and 0.18 part of synergist.

[0045] In this implementation, the preparation process of the molybdenum tailings silicon micropowder is as follows: using hydrochloric acid with a mass concentration of 7% to carry out acid leaching on the screened molybdenum tailings powder to remove soluble oxides in the tailings; The hydrofluoric acid that the mass concentration is 9% is added in the middle, and the ammoniacal liquor that the mass concentration is 18% is then added dropwise a...

Embodiment 3

[0049] The composition and weight proportion of a molybdenum tailings dry-mix mortar of the present embodiment are as follows: 7.5 parts of molybdenum tailings silicon micropowder, 9.5 parts of cement, 3.6 parts of fly ash, 2.7 parts of magnesium slag powder, and 74 parts of molybdenum tailings sand , 1.47 parts of redispersible polymer latex powder, 0.08 part of cellulose ether, 0.12 part of modified starch ether, 0.06 part of sodium bentonite, 0.16 part of water reducing agent, 0.02 part of air-entraining agent and 0.25 part of synergist.

[0050] The preparation process of the molybdenum tailings silicon micropowder in this implementation is as follows: using hydrochloric acid with a mass concentration of 6.5% to carry out acid leaching on the screened molybdenum tailings powder to remove soluble oxides in the tailings; Add the hydrofluoric acid that the mass concentration is 8.5% in the middle, and then dropwise add the ammoniacal liquor that the mass concentration is 22% w...

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Abstract

The invention discloses molybdenum tailing dry-mixed mortar and an application method thereof, and belongs to the technical field of building material preparation. The dry-mixed mortar is composed of the following components: molybdenum tailing sand, a cementing material, redispersible polymer latex powder, a water-retaining thickening agent, a water reducing agent, an air entraining agent and a synergist, and the cementing material is composed of 6-8 parts of molybdenum tailing silica powder, 8-10 parts of cement, 3-4 parts of fly ash and 2-3 parts of magnesium slag powder. By adopting the mortar formula, the utilization rate of the molybdenum tailings can be increased, the serious environmental pollution problem caused by industrial waste residues such as the molybdenum tailings, the fly ash and the magnesium slag powder is relieved, the application range of the molybdenum tailings is expanded, cost reduction and efficiency improvement are facilitated, and the environmental, economic and social benefits are remarkable.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a molybdenum tailings dry-mixed mortar and an application method thereof. Background technique [0002] my country is a country with large molybdenum resources. With the rapid development of my country's economy, mineral resources are constantly being developed, and the mining volume of molybdenum ore is increasing year by year. Mine tailings are industrial waste residues. Improper management of discharge and storage will cause waste of resources and affect the healthy development of the mining industry, as well as cause environmental pollution. Therefore, the problem of resource utilization of tailings is imminent. It is necessary to produce new materials through advanced technology, which can consume tailings while saving resources, and also bring economic and social benefits to mining enterprises. In addition, the comprehensive utilization of tailings re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02
CPCC04B28/02C04B2201/50C04B2201/10C04B18/12C04B18/08C04B18/144C04B2103/0057C04B24/383C04B24/38C04B14/104C04B2103/302C04B2103/304C04B24/122Y02W30/91
Inventor 何兆芳朱广剑孙宏勇
Owner CHINA MCC17 GRP
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