Non-fluorite mineralizer applicable to production of white portland cement

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...

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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

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