Coal Mill System To Improve The Design

During the production of alumina by sintering process,the sintering quality of clinker is quite important.Pulverized coal of high volatile as fuel plays a vital role to stabilize the operation of clinker kiln, improve the clinker quality,reduce the residue of producing alumina, guarantee the safe operation of dust collection.The pulverized coal is made in pulverized coal workshop.There were many shortages in the old product line such as serious pollution,lost of pulverized coal,many dangers to cause death frequently, high power consumption and a lot of maintenance.A new product line will be built in Alumina plant of ShanDong Alumina Company in order to improve the quantity and quality of pulverized coal mill system,decrease the power consumption and noise,make full use of the system energy and convert it to producing ability,guarantee the safe operation of pulverized coal mill system.The design of new pulverized coal product line of the fifth pulverized coal mill system is explained in this paper.Firstly,properties of raw coal and pulverized coal are described.Then,technological parameters, construction,the selection and safety of corollary equipments are carefully illustrated and designed.The component and property of raw coal are preconditions of mill capability.On the other hand,the property of pulverized coal determines whether the pulverized coal system can operate safely or not.Technological parameters describe the whole technological properties of the pulverized coal mill system.The perfect construction can ensure the realization of technological properties.At the same time, other corollary equipments of the system are chosen reasonably.The technological process is simplified and reliability of system is improved. Safety is the base safeguard of stable operation of the entire pulverized coal mill system.Operational practice demonstrates that the pulverized coal mill system designed can maintain stable operation with designed output which is thirty tons per hour.Combustion efficiency is increased and the energy consumption of clinker sintering is decreased.Service life of kiln liner is elongated and running rate of the clinker kiln is increased.Remarkable benefit is made in such fields as energy saving,power saving,environmental protection.The product cost of the pulverized coal mill system is remarkably reduced.The whole system satisfies the users for stable operation,safe production,production quantity and target hitting fulfilled.