light industry

preface
The national building materials industry "big change small" industrial policy is urging enterprises to adjust the vertical kiln in thought and action. Hanjiang River planned output this year reached 20 million tons, now to plan the annual 100 million tons of new dry process rotary kiln production line, to create a broader space for the future survival.
- this is the case of the Han River to carry out a comprehensive analysis of electricity consumption, in order to reference
The rapid growth of China's economy promotes the prosperity in the cement industry, in order to attract a large number of capital to invest in spin dry process production line, which to the current shaft kiln enterprises brought huge impact and pressure.
Go from the subtlety of powerful Hanjiang cement factory development road is the best policy to save the enterprise people "(the development is the hard truth).
Electrical energy consumption accounted for 22% ~ 30% of the total cost of the cement, is caused by a major factor in the high cost of cement here will to Hanjiang cement factory as an example comprehensive study solutions to reduce the power consumption.
Solutions to reduce power consumption
Introduction of the past situation of the Han River cement plant
Strengthening process control and adjustment
Introduction of the past situation of the Han River cement plant
1998 years ago, Hanjiang cement factory product cost is 186 yuan / tons, power consumption 96~103 degrees / tons of. When the market price for ~210 190 yuan / tons, in the operating profit status.
Increase investment in technical innovation in terms of saving energy consumption
1 roots blower application Yi chuangfei inverter
1# fan 240KW
2# fan 200KW
(raw materials, kiln workshop director: Comrade Huang Hao)
2 raw material silo bottom stability material unloading machine with David chuangfei converter
On the bottom of the bin 12 2.2kW motor single stable material unloading machine application Yi Chong Fei frequency converter can improve the incoming instability of; according to the kiln calcination balanced collocation more positions in the proportion of the material to improve the condition of the calcination; but also put an end to the phenomenon of burning the motor.

3 cement silo stabilization material unloading machine with Wilson chuangfei converter
At the end of 12, 2 cement silo 2KW single stable material unloading machine application of inverter

5 energy saving transformer
(1) the original use of 35KV and 10KV two-way power supply, to a 35KV power supply
(2) the advantage: node; reduce the power outage is not consistent and stop production time; 35KV price is cheaper than the 10KV (back)

Strengthening process control and adjustment
1 new crusher, control the size of the grinding.
2 to strengthen management and control, to control the acquisition of water clay.
3 Optimization of steel ball steel egg product distribution and grinding structure.
4 dynamic adjust the raw material reasonably (clinker) formula.
5 to strengthen the internal ventilation to reduce the phenomenon of grinding, using the static electricity.
6 multi feeding into kiln anti collocation.
7 strict requirements to ensure the quality of the ball.
8 reduction of clinker crushing size.
9 purchase of dry powder coal ash.
10 multi collocation package.

Benefit result
Through the above technical transformation and process of strict scientific management and control, the benefits are very considerable;
1, each ton electricity from 1999 of 96 degrees to now original 66 degrees below, per tonne of cement declined 14 yuan, throughout the year to save 210 yuan, not half a year to recover the full investment.
-2, the cost per ton from 186 yuan in 1999 fell to the present 130 yuan, annual savings of 8 million 400 thousand yuan.