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Non-fluorite mineralizer applicable to production of white portland cement

A white silicate and mineralizer technology, applied in the field of new materials, can solve the problems that the production of white cement with impurity content cannot be promoted, it is difficult to balance energy saving and consumption reduction with product performance, and reduce the whiteness of white cement products. Achieve the effects of quality performance improvement, production cost increase, and lower firing temperature

Active Publication Date: 2020-10-30
TIANJIN CEMENT IND DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 1. White cement has high requirements on the quality of fluorite. Low-quality fluorite (low calcium fluoride content, high impurity content, especially high iron oxide content) will not only fail to promote the production of white cement, but may also affect the product. whiteness, which reduces product quality;
[0008] 2. There is a limit to the amount of fluorite added. On the one hand, too high an amount will cause excessive fluorine to volatilize into the atmosphere at high temperature and cause environmental pollution. On the other hand, relevant studies have shown that calcium fluoride will reduce the whiteness of white cement products, making it difficult to Taking into account energy saving and product performance;
[0009] 3. Although the amount of fluorite accounts for a small proportion in white cement ingredients, its cost is relatively high due to its high quality requirements and difficulty in being replaced by other raw materials

Method used

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  • Non-fluorite mineralizer applicable to production of white portland cement
  • Non-fluorite mineralizer applicable to production of white portland cement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A non-fluorite type mineralizer preparation method suitable for white Portland cement, the steps are as follows:

[0039] (1) select low-iron barium slag, phosphorus slag and white slag as mineralizer raw material, weigh by the weight ratio of low-iron barium slag 40%, phosphorus slag 20%, white slag 40%;

[0040] (2) Aluminum chloride, oxalic acid and water are prepared into a solution according to the mass ratio of 1:4:20 to obtain the iron removal solution;

[0041] (3) Add the low-iron barium slag and phosphorus slag in step (1) into the iron removal solution (mass ratio 1:10), stir and react for 30 minutes, filter, wash with water, and dry to obtain the two industrial iron-removing products. waste residue;

[0042] (4) mixing the two kinds of industrial waste slag after iron removal in step (3) with the white slag in step (1), and passing through a 200-mesh sieve to obtain the finished product of the mineralizer;

[0043] (5) Weigh the finished mineralizer produc...

Embodiment 2

[0046] A kind of non-fluorite class is suitable for the preparation method of mineralizer of white portland cement, with example 1, difference is that step (1) mixing material ratio is: according to low-iron barium slag 35%, phosphorus slag 25%, The weight ratio of white slag 40% is weighed.

Embodiment 3

[0048] A non-fluorite type mineralizer preparation method suitable for white Portland cement, the same as Example 1, the difference is that the step (1) mixture ratio is: according to the low-iron barium slag 25%, phosphorus slag 30%, The weight ratio of white slag 45% is weighed.

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Abstract

The invention belongs to the technical field of new materials, in particular to a non-fluorite mineralizer applicable to production of white Portland cement and a preparation method thereof. The non-fluorite mineralizer applicable to production of white Portland cement comprises barium oxide, phosphorus pentoxide, magnesium oxide, Portland cement main elements and a small amount of other trace elements. The effective components in the mineralizer are introduced from different industrial waste residues, barium oxide is introduced from low-iron barium slag, phosphorus pentoxide is introduced from phosphorus slag, and magnesium oxide is introduced from white slag. Calcium oxide, silicon oxide and aluminum oxide are main components in the three waste residues, and other trace elements comprisesulfate, chloride and the like. The invention provides the non-fluorite mineralizer applicable to production of white portland cement, which is low in cost, easy to obtain and excellent in performance, and can effectively reduce the production cost of products and improve the performance of the products, and the preparation method thereof.

Description

technical field [0001] The invention belongs to the technical field of new materials, and in particular relates to a non-fluorite mineralizer suitable for white Portland cement production and a preparation method thereof. Background technique [0002] Existing techniques and drawbacks: [0003] With the development of the world economy and the gradual improvement of people's requirements for the appearance of buildings, the demand for decorative cement has gradually expanded, and white Portland cement (referred to as "white cement") has become the most important variety of decorative cement. The price of white cement per ton is 500-900 yuan / ton, which is much higher than that of ordinary portland cement. The reasons for the high cost of white cement include: high cost of raw materials; high unit clinker fuel consumption; complex process and difficult to guarantee the quality of finished products ; The production scale is small and the production capacity is low. [0004] T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/42
CPCC04B7/424
Inventor 高为民白波王伟
Owner TIANJIN CEMENT IND DESIGN & RES INST
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