Introduction. Cement is manufactured by heating a mixture of ground limestone and other minerals containing silica, alumina, and iron up to around 1450 C in a rotary kiln. At this temperature,...
Multi-compartment ball mills and air separators have been the main process equipments in clinker grinding circuits in the last 100 years. They are used in grinding of cement raw materials (raw meal) (i.e. limestone, clay, iron ore), cement clinker and cement additive materials (i.e. limestone, slag, pozzolan) and coal.
Join us on a journey through strategies and state-of-the-art technologies to enhance separator efficiency in your grinding process and unravel the secrets to effectively producing sustainable cements.
Introduction: - Also called: Cage separators or High Efficiency Separators. - These separators has been developed in the beginning of the eighties (O'Sepa from Onoda Cement). - As the second generation, the air flow required for the separation is produced by an external fan. -
Key sections covering raw materials, burning, grinding and quality control are supported by a range of chapters addressing critial topics such as maintenance and plant reporting, alongside a detailed appendix with essential process calculations.
Closed circuit ball mills are existing with all types of separators grit, mechanical and high efficiency in cement industries. Presently high efficiency separators are common to achieve maximum energy optimization.
The main requirements for modern high efficiency separators are homogeneous grain size distribution and high precision in separation. Moreover, the production of different cement types in one grinding circuit has to be possible.
1. Optimization of the Cement Ball Mill Operation. Optimization addresses the grinding process, maintenance and product quality. The objective is to achieve a more efficient operation and increase the production rate as well as improve the run factor.
Feed material is provided by air slide. Material falls onto centre of dispersion disc, is accelerated radially and distributed evenly in separating area. Fan blow separating air (recirculation or fresh air) into spiral housing and through the curved guide vanes where a swirl flow is created.
Modelling and simulation studies were carried out at 26 cement clinker grinding circuits including tube mills, air separators and high pressure grinding rolls in 8 plants.
