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Barium containing sulpho- ferro- aluminate cement

A technology of aluminate cement and ferroaluminate, which is applied in the field of cement materials, can solve the problems of limiting the application of barium-containing sulfoaluminate cement, unstable strength in the later stage, and high raw material costs, and achieves fast setting and hardening speed and high strength in the later stage. Increase, improve the effect of building quality

Inactive Publication Date: 2004-11-17
UNIV OF JINAN
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Problems solved by technology

[0002] At present, there are some shortcomings and deficiencies in the rapid hardening sulfoaluminate cement used in large quantities, mainly manifested in high firing temperature (1350°C), unstable strength in the later stage, and high cost of raw materials
Barium-containing sulfoaluminate cement uses barium-containing industrial waste slag or barite tailings as raw materials to replace a large amount of gypsum, which reduces the cost of cement; but because the aluminum element in cement minerals is provided by expensive bauxite, the barium-containing sulfur The cost of aluminate cement is also much higher than that of ordinary Portland cement, which limits the wider application of barium-containing sulfoaluminate cement

Method used

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  • Barium containing sulpho- ferro- aluminate cement
  • Barium containing sulpho- ferro- aluminate cement

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Embodiment Construction

[0039] Numbering

[0040] Numbering

[0041] In the laboratory, the above clinker is fired in a silicon-molybdenum rod furnace at 1800°C, and the firing temperature is 1200°C-1280°C. The physical properties of cement are listed in Table 3.

[0042]

[0043] Carried out XRD and SEM analysis to 1# clinker wherein, see figure 1 and figure 2 . It can be seen that in the barium-containing sulfoaluminate cement clinker mineral system, a certain amount of barium-containing calcium sulfoaluminate minerals and dicalcium silicate minerals coexist.

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Abstract

The invention relates to a barium containing sulfur ferrum aluminate cement with sulfur ferrum calcium barium aluminate and dicalcium silicate as the primary minerals, wherein the cement clinker contains 5-80% (weight) of sulfur ferrum calcium barium aluminate, the molecular formula of sulfur ferrum calcium barium aluminate (abbreviated as C4-xBxA3-yF-yS) is (3-X)CaO*XbaO*9(3-Y)Al2O3*Fe2O3*CaSO4 (X, Y=0.10-3). The beneficial effects of the invention are, the burning temperature is higher than that of the sulphoaluminate early strength cement, and the cost is low.

Description

(1) Technical field [0001] The invention belongs to the technical field of cement materials, and relates to barium-containing sulfur-iron-aluminate cement with barium-calcium-sulfur-aluminate and dicalcium silicate as the main minerals. (2) Background technology [0002] At present, the rapid-hardening sulfoaluminate cement used in large quantities has some shortcomings and deficiencies, mainly manifested in high firing temperature (1350°C), unstable strength in the later stage, and high cost of raw materials. Barium-containing sulfoaluminate cement uses barium-containing industrial waste slag or barite tailings as raw materials to replace a large amount of gypsum, which reduces the cost of cement; but because the aluminum element in cement minerals is provided by expensive bauxite, the barium-containing sulfur The cost of aluminate cement is also much higher than that of ordinary Portland cement, which limits the wider application of barium-containing sulfoaluminate cement....

Claims

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Application Information

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IPC IPC(8): C04B7/00C04B7/32
CPCC04B7/323C04B7/003
Inventor 程新常钧芦令超黄世峰叶正茂刘福田
Owner UNIV OF JINAN
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