News Date:2016-07-29 15:14:38
Cement production are high pollution, high energy consumption industries,which does not meet modern industrial development of energy saving targets, in order to achieve energy saving goals of the cement industry, we have investigated the cement production processing. Cement Clinker grinding station is a key link in the cement industry,so as to achieve energy saving we must be from the link, the paper thereon reasonable measures.
With the continuous development of the global economic construction, cement is used more widely, any type of building works are inseparable from cement. The energy consumption of cement is very large, in the case of energy shortage, saving energy consumption of cement, in order to improve production efficiency and reduce the production of waste,we will be undoubtedly focus of the future direction of the production of cement.
Cement grinding station energy saving measures:
1, improving raw materials and products, multi-material Blending
Make full use of industrial waste, such as slag powder, steel slag powder, fly ash and coal gangue after burning these residues, it is first treated at high temperatures, the formation of which has become a silicate, aluminate, there help to improve the performance of cement. People grind materials while reducing size, power consumption can be reduced per unit of product.
2, reasonable and effective control of the composition of particles of cement
At fixed process conditions, so that the sieve 45μm cement and specific surface area of control at a reasonable level to limit 3μm 45μm particles below and above, in order to get a good cement performance and lower production costs. This fineness control method compared with other methods, simple, effective control advantages. As long as the test sample Sieve analysis and specific surface area measurements, it can provide the basis for the operation of the vertical mill.
3, rational use of aids
In the grinding process, a small amount of additives to eliminate powder adhesion and aggregation, accelerate the speed of the grinding material to improve grinding efficiency, but also improve 3-30μm content of 10-20%, it is conducive to high-quality ball , energy-saving, high-yield. Such additives are collectively referred to as "aids." By use of aids in most cases can increase mill production, the production process does not change the situation, to improve the quality of cement production and reduce costs, the production of high-performance green environmental purpose cement.
4, using the new grinding process, In the cement production process, the use of new technologies can significantly reduce energy consumption saving investment, to achieve maximum economic benefits.
5, optimize the internal structure of the mill, setting mandatory screening system with efficient function of separator
These two measures are currently the main direction of reform grinding mill internal structure optimization. To achieve the following results: 30% -60% increase in production, electricity consumption decreased by 25% -40%, electricity consumption dropped tons of cement 8-12kWh. It can effectively improve the strength of cement, in general, can improve the strength of cement 5MPa above.
6, the use of inverter technology
Inverter technology is one of the energy-saving technology, which can help cement production in some auxiliary equipment for energy, such as fans, dosing, variable speed equipment. It also meets the mill running at low speed, high starting torque characteristics to achieve the speed of the ball mill is continuously adjustable. No inrush current when the motor starts, since sufficient power from the protection functions. Process control to ensure the quality and reduce maintenance costs.
7, to improve the power factor and efficiency of electrical equipment, reduce power consumption
The use of low-voltage motors - phase control technology, it has the advantage when you drag a light load and heavy load automatically adjust the output power of the motor, the motor at optimum when the purpose of saving, it can save about 15%. Use of green lighting system, through these measures, greatly improved cement companies power factor, reduce reactive power demand, reducing active power losses.
In the future cement grinding station production process, comprehensive consideration of quality, yield and energy consumption, to achieve a balance between the three. Traditionalball grinding mill energy utilization is low, a lot of wasted effort, and the corresponding transformation of energy-saving technologies should be grinding process basic tasks, which all need to build a certain indicator of quality control basis. The ratio of cement particles to achieve a reasonable material should meet the grading requirements for optimal performance, adding an appropriate amount of industrial waste. Strive to cement particles is the main goal of the spherical grinding process quality control, proper coordination between good quality and yield, energy consumption between the three cement grinding energy saving, saving the basic way.
