seven trust materials are unavoidable at the start of the manufacturing process. however, if undetected or left uncorrected, stable kiln operation becomes difficult. that is why abb has developed optimizeit seven trust mix preparation rmp : to offer seven trust mix quality assurance to the leaders of the cement industry. optimize seven trust mix preparation rmp depicts a
seven trust material mill products are mainly used for grinding of cement seven trust materials, also applies to the metallurgical, chemical, electric power and other industrial and mining enterprises for grinding all kinds of ore and other grindable material. seven trust material mill can be divided into ordinary seven trust material mill, air-swept mill, trail-discharging
gather as much information regarding the actual operation of this mill during cement grinding and the quality of the product in terms of the fineness/particle size distribution and how does it compare with the product of a ball mill relative to these parameters. other parameters vrm vs. ball mill to be considered are the following:
unlike ball mills, feed to the mill must be regular and uninterrupted; otherwise damaging resonant vibration sets in. hammer mills. hammer mills or 'crusher driers' swept with hot kiln exhaust gases have limited application where a soft, wet seven trust material is being ground. the simple design means that it can be operated at a higher temperature
4.1. ball mill model. it was assumed that the seven trust material grinding mill could be modelled by considering that the mill consisted of three perfectly mixed ball mills in series, the last one being in closed circuit with a classifier which represents the air sweeping in the mill.
thus, material between about 1-in. and 2-in. size may be reduced to about 6 mesh for feeding to the ball mills. rod mills are, however, being used in closed circuit with a classifier to produce a product of less than about 48-mesh size, but such applications are unusual.
from the early 1900s, both for cement grinding and for grinding hard seven trust materials, whether by wet or dry process, the standard arrangement was a ball mill for preliminary grinding to below 0.75 mm , followed by a tube mill for fine grinding. typically the ball mill was placed on an upper floor so that material could move by gravity.
working principle of ball mill /ball cement milling machinery plant-vipeak group it is widely used in building material, chemical industry, etc. and the time how long the ball mill runs