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Low-alkaline sulphur-resisting portland cement for road and production method thereof

A technology of road silicate and production method, which is applied in the field of low-alkali-sulfur-resistant road portland cement and its production, can solve the problems of inability to meet demand, high production cost, single performance of road portland cement clinker and the like , to achieve the effect of small dry shrinkage, strong sulfate resistance and good wear resistance

Inactive Publication Date: 2012-09-12
XINJIANG TIANSHAN CEMENT CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The production cost is high, and the single performance of road portland cement clinker cannot meet the airport's demand for high-performance road portland cement

Method used

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  • Low-alkaline sulphur-resisting portland cement for road and production method thereof
  • Low-alkaline sulphur-resisting portland cement for road and production method thereof
  • Low-alkaline sulphur-resisting portland cement for road and production method thereof

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Embodiment Construction

[0019] The invention uses high-quality limestone, sandstone and iron and steel powder with low alkali content as raw materials, and mixes 4%-8% of low-alkali iron and steel powder, 80%-82% of low-alkali limestone and 12%-14% of low-alkali sandstone to produce cooked material; then the clinker and low-alkali natural gypsum are ground in a certain proportion to make low-alkali sulfur-resistant road Portland cement.

[0020] In the present invention, 80%-82% of low-alkali high-quality limestone, 4%-8% of ferrous correcting raw material iron and steel powder, and 12%-14% of silicon-aluminum correcting raw material sandstone are batched into ￠2.4×13 Raw meal mill produces raw meal that complies with GB 13693-2005 road Portland cement clinker composition; then the raw meal is homogenized at 0.03-0.05Mpa pressure and then enters the rotary kiln; rotary kiln control parameters: calcination temperature of 1100-1300°C , The negative pressure of the kiln system is controlled at 2-4 kPa, ...

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Abstract

The invention discloses a low-alkaline sulphur-resisting portland cement for road and a production method thereof. The method comprises the following steps: using 80-82 % of low-alkaline high-quality limestone, 12-14 % of low-alkaline sandstone and 4-8 % of low-alkaline steel powder as raw materials to produce clinker; then grinding the clinker with low-alkaline natural gypsum according to a certain proportion to prepare low-alkaline sulphur-resisting portland cement for road. The prepared cement has low dry-shrinkage ratio, good wear resistance, and strong sulfate resistance. The method can reduce the production cost and significantly improve the properties of the portland cement for road.

Description

technical field [0001] The invention relates to a treatment method related to international patent classification CO4B lime, slag, cement, concrete or similar building materials, especially a low-alkali sulfur-resistant road portland cement and a production method thereof. Background technique [0002] In the known technology, road Portland cement is mainly produced from limestone, silica-alumina raw materials, iron raw materials, and natural gypsum. Although road engineering has special requirements, the existing road cement can only use general-purpose cement. Standards, with the continuous improvement and clarification of the special performance requirements of road Portland cement in airport construction, the demand for low-alkali Portland cement products and technologies is becoming increasingly urgent. [0003] In the prior art, the method of low-alkali Portland road cement is seldom disclosed. The prior art is to use limestone, iron correcting raw materials, and silic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/06C04B7/36
Inventor 张泽洪魏银靳冬民孔祥兵裴强何萍侯淑英贾定强王育才林家德张新年何志军张雪琴林静陈世文艾海提·肉孜
Owner XINJIANG TIANSHAN CEMENT CO LTD
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