SBM milling technology is integrated in the country, both inside and outside (including: Denmark / Germany / Japan / United States and other well-known international companies) effective basis of the results of scientific research and technology, in light of China's cement industry practice and test production, as well as the use of cement specific circumstances, with the optimum combination of cement production and the quality of a variety of factors related to the ball mill grinding Taiwan, production and quality have been greatly enhanced.

Whether laps flow of a stream or the process by SBM milling technology, the yield and quality of cement have a significant enhancement, has been transformed in the last 30 of the 40 sets of cement mill, there has been some success. ￠ to 2.2 m * 6.5m/7.5m laps flow mill as an example, when the output of Taiwan Cement Mill has reached 15-22 / h, while ensuring that the specific surface area of 300-380 m2/kg cement and cement particles more reasonable level distribution; and raw materials mill's table output is as high as 31-35 t / h /. Sichuan Jinding Group (formerly Emei cement plant) ￠ 3 m * 11m lap flow of cement mill, its output from Taiwan, 42 t / h has been raised to 55 t / h, the only energy-saving one, in the three months can be fully recovered investment.

First, the problems

1.1 ball mill output

Usually, ball mill output increase is a direct way for three kinds:

1. Before the mill machine installation a  crusher;

2. Improved milling system to improve grinding efficiency;

3. Canadian home high efficiency separator.

The above-mentioned three kinds of methods, any one kind of ball mill can substantially improve the yield. Of course, if the factory conditions permitting, supporting the above-mentioned three kinds of methods used, the effect is desirable, this is grinding system design at home and abroad in recent years the trend. The relationship between: a chronology is a prerequisite before grinding, grinding flour is to ensure that after the election, is the fundamental transformation of the mill. Pre-grinding mill to make materials chronology size greatly reduced, thereby reducing the grinding system load efficiency of the separator, the most direct product efficiency is the maximum fine powder was promptly elected to reduce the rate of cement powder to finished , lower mill load, and transform the mill, which is grinding system improvements, is the most fundamental solution. To reduce the size of the grinding material, separator efficiency improved, if grinding system less efficient, not only the impact of the mill production also affected the quality of cement.

1.2 cement quality problems

The quality of cement, solely from the grinding process, before crushing and grinding with the separator is not directly related to efficiency. China's cement quality test indicators are generally two: cement Screen residual value and specific surface area. But in recent years, international inspection of the cement quality indicators is the particle size distribution of cement, but this indicator than the residual value and cement sieve surface area than the quality of cement better reflect the true situation. This is something that has already caused China's cement workers very seriously. In general, cement particles, less than 3 μ m particles rapid hydration, not conducive to cement the long-term strength, and recommends no more than 10% greater than 65 μ m particles without basic activity, not the best; 16-24 μ m particles highest activity . Some cement plant in the production of adding limestone. Limestone is no activity, and it is purely a kind of filler, but the finished product can be improved cement particle size distribution.

After the implementation of the new standard cement, cement Screen residual value of this indicator has been little practical significance. New standards in the area more attention than some, and the particle size distribution for cement is no specific requirements.


Second, our task

The significance of the implementation of the new standards is the need to substantially improve the quality of cement products, is the significance of further accelerate the elimination of backwardness, to promote market competition, convergence with the international cement standards for China's accession to the WTO, the cement industry to prepare for integration into the international market. As a result, China's cement plant, in particular the small and medium-sized cement factory how to improve the yield and quality of cement, it has become an urgent problem.