Titanium gypsum waste residues composite cementing material and application thereof

A technology of composite cementitious material and titanium gypsum, applied in the field of building materials, can solve the problems of complex and diverse substances, affecting the hydration speed, etc., and achieve the effects of simple reaction process, improved hydration and hardening ability, and shortened setting time.

Active Publication Date: 2019-10-25
广西藤县广峰钛白有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technology, quicklime is used as an activator to blend with titanium gypsum first, which will lead to complex and diverse substances produced in the early stage and affect the early hydration rate

Method used

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  • Titanium gypsum waste residues composite cementing material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A titanium gypsum waste slag composite cementitious material, prepared from the following components in parts by weight:

[0028] Titanium gypsum: 40 parts;

[0029] Alkaline slag: 20 parts;

[0030] Portland cement: 35 parts;

[0031] Iron sulfate: 3 parts;

[0032] Amino superplasticizer: 2 parts;

[0033] Dry the titanium gypsum raw material at 210°C for 2 hours, crush it with a pulverizer at 3500 rpm for 2 hours, grind it, and pass it through a 250-mesh sieve; use a pulverizer at 1800 rpm for 1 hour, pass it through a 200-mesh sieve, and obtain a specific surface area of ​​400m 2 / Kg of slag and cement powder.

[0034] Applying the titanium gypsum waste slag composite cementitious material to building materials includes the following steps:

[0035] (1) Weigh the composite cementitious material according to a certain ratio, first place the titanium gypsum powder and ferric sulfate in a cement slurry mixer and stir at 40rpm for 15min, then add slag, Portland cem...

Embodiment 2

[0038] A titanium gypsum waste slag composite cementitious material, prepared from the following components in parts by weight:

[0039] Titanium gypsum: 56.5 parts;

[0040] Dolomite: 30 parts;

[0041] Portland cement: 10 parts;

[0042] Sodium dihydrogen phosphate: 1.5 parts;

[0043] Polycarboxylate superplasticizer: 2 parts;

[0044] Dry the titanium gypsum raw material at 200°C for 3 hours, crush it with a pulverizer at 3000rpm for 2 hours, grind it, and pass it through a 300-mesh sieve; use a pulverizer at 2000rpm for 2 hours, pass it through a 150-mesh sieve, and obtain a specific surface area of ​​380m 2 / Kg of dolomite and cement powder.

[0045] Applying the titanium gypsum waste slag composite cementitious material to building materials includes the following steps:

[0046] (1) Weigh the composite cementitious material according to a certain ratio, first place the titanium gypsum powder and sodium dihydrogen phosphate in a cement slurry mixer and stir at 25rp...

Embodiment 3

[0049] A titanium gypsum waste slag composite cementitious material, prepared from the following components in parts by weight:

[0050] Titanium gypsum: 70 parts;

[0051] Alkaline slag: 14 parts;

[0052] Portland cement: 10 parts;

[0053] Sodium dihydrogen sulfate: 2 parts;

[0054] Naphthalene superplasticizer: 4 parts;

[0055] Dry the titanium gypsum raw material at 150°C for 3 hours, crush it with a pulverizer at 4000rpm for 2 hours, grind it, and pass it through a 280-mesh sieve; use a pulverizer at 2800 rpm for 2 hours, pass it through a 210-mesh sieve, and obtain a specific surface area of ​​410m 2 / Kg of slag and cement powder.

[0056] Applying the titanium gypsum waste slag composite cementitious material to building materials includes the following steps:

[0057] (1) Weigh the composite cementitious material according to a certain ratio, first place the titanium gypsum powder and sodium dihydrogen sulfate in a cement slurry mixer and stir at 15rpm for 30min,...

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Abstract

The invention belongs to the field of building materials, and relates to the resource utilization of titanium gypsum waste residues, in particular to a titanium gypsum waste residue composite cementing material. The titanium gypsum waste residues composite cementing material is prepared from the following raw materials in parts by weight: 20-80 parts of titanium gypsum, 1-70 parts of an basic catalyst, 0.1-10 parts of a chemical additive and 0.1-5 parts of a water reducing agent. The invention provides a method for applying the composite cementing material in the building material. The methodcomprises the following steps that the raw materials are prepared in parts by weight, the titanium gypsum and the chemical additive are mixed and stirred, then the basic catalyst, the water reducing agent and water are sequentially added, the weight ratio of the water and the cementing material is controlled at 0.3-0.7, the mixture is evenly stirred, and pouring and curing are carried out after slurry is prepared. The obtained building material is good in mechanical performance and good in durability; and in addition, the composite cementing material has the characteristics of low production and processing cost, simple technological operation and reduction of environmental pollution, and a new way for rational utilization of titanium gypsum waste residues resources is provided.

Description

technical field [0001] The invention belongs to the field of building materials and relates to resource utilization of titanium gypsum waste residue, in particular to a titanium gypsum waste residue composite gelling material and its application. Background technique [0002] Titanium gypsum is a waste residue mainly composed of dihydrate gypsum produced by adding lime (or carbide slag) to neutralize a large amount of acid wastewater in order to treat acid wastewater when sulfuric acid method is used to produce titanium dioxide. Titanium gypsum has a large amount of production and storage, and needs to be utilized in a large-scale manner. However, it contains certain impurities and needs to be disposed of in a harmless manner before it can be comprehensively utilized. In recent years, about 320,000 to 480,000 tons of titanium gypsum waste residue is produced in my country every year, which has hardly been effectively utilized. The discharge of titanium gypsum not only occup...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B111/20
CPCC04B28/142C04B2111/00017C04B2111/20C04B2201/50C04B18/141C04B7/02C04B22/149C04B2103/302C04B22/16C04B14/26C04B22/147
Inventor 梁铭懿
Owner 广西藤县广峰钛白有限公司
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