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A kind of titanium extraction tailings-titanium gypsum-based composite cementitious material and its preparation method

A composite cementitious material and a technology for extracting titanium tailings, applied in cement production, etc., can solve the problems of easily polluting groundwater sources, consuming titanium gypsum, and occupying large land, so as to relieve environmental pressure and economic pressure, save land, and easily The effect of the operation

Active Publication Date: 2021-02-02
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to geographical restrictions, the current treatment method cannot consume a large amount of titanium gypsum, and most of the titanium gypsum is still piled in the stockyard
The stockpiling of titanium gypsum will occupy a large amount of land, and it is easy to pollute groundwater sources after being washed by rainwater

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A preparation method of titanium tailings-titanium gypsum-based composite cementitious material, comprising the following steps:

[0033] a. Calcination and grinding: Grind the titanium tailings to a median particle size of 10-15 μm; grind the titanium gypsum to a median particle size of 15-19 μm; calcinate the titanium gypsum at 350°C for 6 hours Finally, grind until the median particle size is 12-15 μm;

[0034] B, batching: according to the composition of 180 parts by weight of titanium tailings, 90 parts by weight of titanium gypsum, 90 parts by weight of calcined titanium gypsum, and 90 parts by weight of cement, the raw materials of each component are taken;

[0035] Described cement is ordinary Portland cement (can be 42.5 and above);

[0036] c. Mixing: uniformly mix the titanium extraction tailings, titanium gypsum, calcined titanium gypsum and cement in step b to prepare the titanium extraction tailings-titanium gypsum-based composite cementitious material. ...

Embodiment 2

[0039] A preparation method of titanium tailings-titanium gypsum-based composite cementitious material, comprising the following steps:

[0040] a. Calcination and grinding: Grind the titanium tailings to a median particle size of 10-15 μm; grind the titanium gypsum to a median particle size of 15-19 μm; calcinate the titanium gypsum at 350°C for 6 hours Finally, grind until the median particle size is 12-15 μm;

[0041] B. Ingredients: 180 parts by weight of titanium tailings, 157.5 parts by weight of titanium gypsum, 22.5 parts by weight of calcined titanium gypsum, and 90 parts by weight of cement to get the raw materials of each component;

[0042] Described cement is ordinary Portland cement (can be 42.5 and above);

[0043] Others are the same as embodiment 1, omitted.

[0044] According to the preparation method and detection method stipulated in GB / T 17671-1999 "Cement Mortar Strength Test", the prepared titanium tailings-titanium gypsum-based composite cementitious ...

Embodiment 3

[0046] A preparation method of titanium tailings-titanium gypsum-based composite cementitious material, comprising the following steps:

[0047] a. Calcination and grinding: Grind the titanium tailings to a median particle size of 10-15 μm; grind the titanium gypsum to a median particle size of 15-19 μm; calcinate the titanium gypsum at 350°C for 6 hours Finally, grind until the median particle size is 12-15 μm;

[0048] B. Ingredients: 180 parts by weight of titanium tailings, 135 parts by weight of titanium gypsum, 45 parts by weight of calcined titanium gypsum, and 90 parts by weight of cement to get the raw materials of each component;

[0049] Described cement is ordinary Portland cement (can be 42.5 and above);

[0050] Others are the same as embodiment 1, omitted;

[0051] According to the preparation method and detection method stipulated in GB / T 17671-1999 "Cement Mortar Strength Test", the prepared titanium tailings-titanium gypsum-based composite cementitious mate...

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Abstract

The invention discloses a titanium extraction tailing-titanium gypsum-based composite cementing material which is characterized by being prepared by mixing 135-270 parts by weight of titanium extraction tailings, 67.5-225 parts by weight of titanium gypsum, 15-135 parts by weight of calcined titanium gypsum and 67.5-135 parts by weight of cement; the calcined titanium gypsum is a product obtainedby calcining the titanium gypsum at a temperature of 300 to 500 DEG C for 20 min to 6 h; and the cement is ordinary Portland cement. A preparation method comprises the following steps: grinding raw materials, taking the raw materials according to the proportion by weight, and mixing to obtain the titanium extraction tailing-titanium gypsum-based composite cementing material. The waste titanium extraction tailing and titanium gypsum are used to prepare the titanium extraction tailing-titanium gypsum-based composite cementing material, the harm of the waste to the human body and the environmentcan be reduced, lands occupied by the piled waste can be saved, and the prepared titanium extraction tailing-titanium gypsum-based composite cementing material has good performances, is suitable for building materials, and is highly-practical.

Description

technical field [0001] The invention belongs to composite cement and its preparation, and relates to a titanium tailings-titanium gypsum-based composite cementitious material and a preparation method thereof. The titanium tailings-titanium gypsum-based composite cementitious material of the present invention is suitable as a building material, can be used as a wall material, such as a wallboard, and can also be used as a roadbed cementing material and the like. Background technique [0002] With the rapid development of my country's economy, the demand for building materials in the construction industry is gradually increasing. Ordinary cement is the main raw material for the preparation of building materials, but the cement industry consumes a lot of energy, and limestone in the raw material will release a lot of greenhouse gases during the production process. Phosphate fertilizer, titanium dioxide, and metallurgy industries produce a large amount of industrial waste, whic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/19C04B7/21C04B7/36
CPCC04B7/19C04B7/21C04B7/36Y02P40/10
Inventor 严云张玖福胡志华
Owner SOUTHWEAT UNIV OF SCI & TECH
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