Calcined Dolomite Documentary

On September 2nd , 2016, Henan Zheng Mining Machinery Co., Ltd.got on  rotary kiln experimental production line of the official ignition operation to dolomite as an example of the ignition test to verify whether the material provided by the customer as a source of raw materials forging white.

Forging white as a silicon thermal method of magnesium basic raw materials, the quality of its direct impact on the quality of magnesium output and the quality of crude magnesium. Hydration activity and burning is to determine whether the qualified wrought white two important indicators, in this experiment, we focus on testing the two indicators can meet the requirements of industrial production.

The results show that the main factors affecting the quality of wrought white are calcination temperature, dolomite particle size, calcination time and negative pressure at the kiln end.
The calcination temperature is the most important factor to promote the decomposition of dolomite. It is found that the dolomite decomposes more and more rapidly as the temperature increases in a certain temperature range, But reached a certain value, the decomposition rate reached the highest. At this point, forging white surface of the largest degree of freedom, the highest degree of activity. And then increase the temperature, the surface layer of slag formation, hydration activity decreased, but little change in the reduction of burning.

The influence of particle size on the quality of forging is mainly related to the type and size uniformity of the rotary kiln. Different types of rotary kiln adapt to different particle size. The homogeneity is mainly due to the disaggregation of large granularity dolomite, Small size of dolomite due to the theoretical time is less than the actual calcination time, resulting in over-burning phenomenon, a significant reduction in activity.Kiln end of the negative pressure can be within a certain range to accelerate the decomposition of dolomite decomposition increased. Mainly due to the increase in negative pressure at the kiln, the flow of air to accelerate the decline in carbon dioxide concentration, dolomite decomposition pressure and the difference between carbon dioxide partial pressure increased to accelerate the decomposition of dolomite.

Henan Zhengzhou mining machinery co.ltd,as a professional manufacturer of metal magnesium production line, to provide you with the most reasonable program, if you have a higher pursuit of equipment, Henan Mining Machinery Co., Ltd. sincerely welcome your call: 0371-55902866.