The high quality shaft kiln performance compared with the high quality of rotary kiln; there are many differences between them both semi-finished products internal quality of cement and as the final product quality performance characteristics of concrete.
The following is the differences of the cement performance. Firstly .The differences of the cement performance.
1, shaft kiln cement long setting time, largely longer than rotary kiln cements;
2, shaft kiln cement standard consistency water consumption is generally higher than rotary kiln cement;
3, shaft kiln cement bleeding phenomenon more;
4, low flexural strength of shaft kiln cement mortar.
Second, performance in concrete construction of the configuration difference prepared:
1, shaft kiln cement concrete setting time is longer than the other;
2, prepared the shaft kiln cement concrete exudation rate were greater than the third of rotary kiln.
Configuration difference prepared:
1, shaft kiln cement concrete mechanical properties of the concrete flexural strength and compressive strength of the ratio of the prepared under rotary kiln cement concrete;
2, the light burning state in the shaft kiln cement mix of pozzolana burn it, such as clay, shale, etc content, the more the mechanical performance of concrete, the damage is greater.
Why the shaft kiln cement and rotary kiln cement has so big differences in the use of performance, we think have the following reasons:
1. Silicate minerals content in the shaft kiln cement clinker is low
2. The using compound mineralized in shaft kiln cement production using
3. The grinding fineness in haft kiln cement.
So we can make an conclusion that, the influence of shaft kiln cement and rotary kiln water mud & especially in the use of new dry process cement rotary kiln 'performance, there is a gap. Many set cement plant according to European standards even for unaccepted production. Our country join in 456, requires us to adjust the industrial structure as soon as possible, develop new dry process cement production technology, make our products can keep a foothold on the international market.
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