G stands for Xinxiang Great Wall Machinery Co., Ltd., RM is a vertical roller mill, GRM series vertical mill means a series of large-scale grinding equipment developed by Xinxiang Great Wall Machinery, which can be used for ore and non-metallic mineral grinding.

2006

 

We has been established for 48 years, which has vigorously developed vertical mills with remarkable energy saving and environmental protection characteristics in response to the national call for energy conservation and environmental protection and to welcome the arrival of the era of asphericalization.

 

2007

 

The first vertical mill of chaeng was successfully put into production in Yuanan, Hubei. Then, on the basis of introducing the world's advanced vertical mill technology, the company cooperated with the domestic vertical mill expert Dr. Liu Zihe to successfully develop the GRM series vertical mill, creating the Great Wall vertical mill era.

 

GRM series vertical mills are suitable for processing various industrial wastes such as slag, steel slag, nickel slag, and various materials such as raw materials, clinker, coal, metal and non-metallic ores; it integrates grinding, drying, powder separation and conveying. Compared with traditional grinding equipment, it has significant energy-saving effect and is highly praised by major enterprises.

With the rapid development of China's industrial production and the implementation of the new "Environmental Protection Tax Law" in 2018, the treatment and reuse of industrial waste has become an important measure for environmental protection in recent years and even in the future. Taking the development trend of energy conservation and environmental protection as an opportunity, Xinxiang Great Wall uses advanced technology GRM series vertical mills to realize the resource utilization of industrial waste slag and turn waste into treasure.

 

Slag is the waste slag produced in blast furnace ironmaking. The molten slag is poured directly into the pool for cooling, and the rapid cooling makes the slag granulated into small particles of 1-3mm, which we call granulated blast furnace slag and water slag.

 slag vertical mill

Granulated blast furnace slag powder, referred to as slag powder or slag powder, is a fine powder obtained by grinding granulated blast furnace slag to a certain fineness and drying. The slag powder is used as an admixture in cement and concrete production. It can replace 20%-30% of cement consumption in concrete and cement products for various purposes, which not only conforms to the development trend of energy saving and emission reduction in the building materials industry, but also achieves the goal of reusing waste slag and exhaust gas from steel plants, which has significant economic and social benefits .

 

Steel slag is the solid waste slag produced in the steelmaking process of converters and electric furnaces, and the output is about 10%-15% of the crude steel output. As a major steel producer, my country has a huge stock of steel slag and complex composition, which has always been a major problem for iron and steel enterprises.

In view of the raw material characteristics of steel slag, Xinxiang Great Wall adopts the new GRMSS steel slag vertical mill as the main grinding equipment to comprehensively grind the steel slag. It has obvious advantages in improving the grinding ability and anti-abrasion performance, and can increase the specific surface area of ​​the steel slag and reduce the powder Wear electricity consumption.

 

 steel slag vertical mill

 

 

Nickel slag, manganese slag, vanadium-titanium slag, etc. are industrial wastes produced in the smelting process of nickel-iron ore, vanadium-titanium ore, etc., with huge inventory and low comprehensive utilization rate.

 

Xinxiang Great Wall and well-known experts at home and abroad carried out technical alliances and used the company’s industrial waste slag powder research center. After a large number of experimental studies, it has been shown that nickel slag, manganese slag, vanadium-titanium slag and other fine powders obtained after grinding treatment have certain Potential activity, used as an admixture in concrete, can effectively reduce the cost of concrete and achieve both economic and environmental benefits.

 

 

 

Aiming at the characteristics of poor grindability of nickel slag and other materials, the vertical mill process is adopted, which has high output per hour and low system energy consumption; the specific surface area of ​​the finished product is 420㎡/kg, which can effectively stimulate the potential activity of nickel slag, vanadium titanium slag, etc.

After recent years of technological innovation and development and continuous deepening of reforms, the specifications of Chaeng GRM series vertical mills have become more abundant, forming an industrial waste slag vertical mill series with an annual output of 200,000-1.5 million tons and a daily output of 1,000 tons-10,000 tons of cement production lines The supporting raw material vertical mills, coal vertical mills, cement vertical mills, etc. we can meet the needs of different fields such as cement, building materials, steel, and commercial concrete.