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Cement admixture containing vanadium titano-magnetite tailings and preparation method and application of cement admixture

A technology of vanadium-titanium magnetite and admixtures, which is applied in cement production, etc., which can solve problems such as the preparation method of cement admixtures to be studied, the inability to use cement admixtures, and the lack of pozzolanic activity, etc., to achieve low equipment maintenance costs and reduce processing The effect of less cost and equipment wear

Active Publication Date: 2020-06-19
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, cement raw meal is often limited by the transportation radius
Moreover, vanadium-titanium magnetite tailings have no pozzolanic activity, and cannot be used as cement mixture
[0005] In summary, the comprehensive utilization of vanadium-titanium magnetite tailings resources still faces major economic and technical problems, and the cement mixture containing vanadium-titanium magnetite tailings and its preparation methods need to be studied

Method used

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  • Cement admixture containing vanadium titano-magnetite tailings and preparation method and application of cement admixture
  • Cement admixture containing vanadium titano-magnetite tailings and preparation method and application of cement admixture
  • Cement admixture containing vanadium titano-magnetite tailings and preparation method and application of cement admixture

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Effect test

Embodiment 1

[0027] A method for preparing cement mixture from vanadium-titanium magnetite tailings, the sample is from the vanadium-titanium magnetite tailings in Panzhihua, Sichuan, and the vanadium-titanium magnetite tailings include: 1.0-5.5% by mass fraction TiO 2 , 10.0-20.0% CaO, 8.0-20.0% Al 2 o 3 and 40.0-65.0% SiO 2 , the mass fraction of each component of the vanadium-titanium magnetite tailings can be within the above range, the tailings -0.075 microns account for 60%, and the main gangue minerals in the tailings are chlorite, feldspar, pyroxene and other silicon-alumina salt minerals. The method specifically includes the following steps:

[0028](1) Mixing and slaking: the ratio of each component is: vanadium-titanium magnetite tailings account for 92.95%, lime accounts for 5.00%, sodium silicate accounts for 2%, and triethanolamine accounts for 0.05%. The specific steps are as follows: after drying the vanadium-titanium magnetite tailings, weigh 1859g of vanadium-titaniu...

Embodiment 2

[0038] Sample No. 4 was selected to prepare cement with different dosages, and the specific formula is shown in Table 3.

[0039] Table 3 Cement formulations of different particle size samples

[0040] Tailings-based cement mixture / % Clinker / % plaster / % 0 97 3 5 92 3 10 87 3 15 82 3 20 77 3 30 67 3

[0041] The strength of cement mortar with different content is shown in Table 4.

[0042] Table 4 Strength of cement mortar with different content of tailings-based cement mixture

[0043]

[0044] As can be seen from Table 4, the vanadium-titanium-magnetite tailings-based cement mixture prepared by the invention can replace part of the cement clinker, and its cement mortar strength still meets the national standard, thereby realizing the vanadium-titanium-magnetite tailings Optimal utilization of mine resources.

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Abstract

The invention belongs to the technical field of comprehensive utilization of mineral resources, and particularly relates to a cement admixture containing vanadium titano-magnetite tailings and a preparation method and application of the cement admixture. The cement admixture comprises the following components: vanadium titano-magnetite tailings, lime, sodium silicate, triethanolamine and water. The preparation method comprises the following steps: mixing and curing vanadium titano-magnetite tailings, lime, sodium silicate, triethanolamine and water according to a certain ratio, carrying out ultrafine processing through a steam kinetic energy mill, and carrying out grading treatment to complete the preparation of the cement admixture. The method has the advantages of short technological process, small environmental pollution, easily available raw materials, high operability and the like, a new method is provided for efficient utilization of the vanadium titano-magnetite tailings, the problem of low utilization efficiency of the vanadium titano-magnetite tailings for a long time is solved, the environmental pressure of stacking of the vanadium titano-magnetite tailings can be relieved, and economic benefits can be created.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of mineral resources, in particular to a cement mixture containing vanadium-titanium magnetite tailings and a preparation method and application thereof. Background technique [0002] my country has rich reserves of vanadium-titanium magnetite. In particular, the Panxi area is the largest vanadium-titanium magnetite deposit in my country. Based on the existing reserves, the direct economic value of Panzhihua vanadium-titanium magnetite alone is about 3.4 trillion yuan. At present, the development and utilization of vanadium-titanium magnetite are mainly based on wet beneficiation technologies such as flotation, magnetic separation, and gravity separation. After the ore is crushed and ground, iron and titanium are recovered through magnetic separation, flotation, gravity separation and other processes to obtain iron concentrate and titanium concentrate products. However, the tail...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/24
CPCC04B7/24Y02P40/10
Inventor 陈超肖军辉张裕书张少翔刘能云朱志敏
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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