China is well-deserved steel big country, strong support from the Chinese steel industry development of petrochemical, mechanical processing, coal, electric power and other industries, has made remarkable achievements. At present, China's economic slowdown, structural adjustment pains, weak effective demand, in this economic background, China's steel industry has entered into an unprecedented difficult period, and integrated steel plant waste resources re-use, such as the iron and steel plants discharge residue mainly steel slag, blast furnace slag, slag and other processed, to become China's iron and steel plant restructuring, increase profit point of a powerful way.

1. steel slag / blast furnace slag / slag after treatment can be used where good economic returns?

Blast furnace slag. The so-called blast furnace slag cement is used to replace part of Slag Portland cement. In the production of ordinary portland cement, due to limestone calcination, and therefore emit large amounts of CO2, and blast furnace slag cement is a mixture of crushed blast furnace water quenching slag portland cement can be, not only the raw material containing CO2, and does not require energy required for calcination, it is replaced by blast furnace water quenching slag Portland cement portion equal portion of CO2 emission reductions. Blast furnace slag cement with the addition of 45% Blast Furnace Slag case, to reduce 318kg CO2 per tonne of cement emissions. Compared with ordinary Portland cement, representing a decrease of 43% CO2 emissions.

Steel slag . Steel slag has been carried out using purified sea trials, tests showed that the use of steel slag in the iron sulfides can mud and hydrogen sulfide decomposition, purify polluted waters. In addition, the use of slag hydration curing effect, making the products can also be used for diving breakwater, can effectively improve coastal water quality and algae field, and the steel slag dredged soil mixed with dredged soil can be modified as a basis for algae and coral reproduction, the steel slag to improve the environment plays an important role.

Steel slag. Steel slag can replace gravel and sand, save resources.

2. What steel slag processing equipment / blast furnace slag / steel slag most efficient and save money?

Since entering the twentieth century, a variety of new and efficient grinding equipment such as vertical mill appearance, making the preparation of steel slag efficient low / blast furnace slag / slag become a reality.

CHAENG ( Great Wall Machinery Co., Ltd. ) launched GRM series blast furnace slag vertical mill , steel slag vertical mill, they set crushing, drying, grinding, separator, conveying in one compact layout, covering about 50% of the milling system and may open layout, investment costs greatly reduced. Its supporting a PLC / DCS automatic control system, remote control, easy to operate.

This series vertical mill efficient use of new cage rotor separator to ensure that the finished product can be flexibly adjusted in the specific surface area of 400 ~ 550㎡ / kg range, to meet customer requirements fineness. The whole system is in a state of negative pressure, no dust spills, clean environment, to meet the national environmental protection requirements; through the maintenance tank, flip rocker, replace the roller sleeve, convenient linings, reducing downtime.

It is worth mentioning that the steel slag grindability poor specificity, the CHAENG after several years of significant investment of human, financial, research and other funds in the steel slag in the first production line of "Pretreatment magnetic separation equipment + vertical roller mill" new closed system. The grinding process equipment improvements, and a special focus on the election in the grinding process in addition to iron, increase grinding capacity and anti-abrasion performance and other measures ultimately makes steel slag vertical mill grinding process improvement and successful operation, but also the largest limit increased steel slag surface area, reducing the grinding power consumption.

CHAENG will work to promote the steel industry to improve the economic, social and progressive realization should be some development.