Product Specifications
Product Description
1. Close-circuit grinding process
According to yearsexperience, our company promotes pre-grinding process of reducing the size of materials into the mill and multi-broken-little grinding. This process can improve capacity of mill and lower power consumption. If the fist bin of ball mil move outside the mill to crush, Efficiency of crusher can reach 25% to 40%. According of reports, efficiency of ball mill can improve 30% to 50% and power consumption can reduce 10% to 20%, then Because of the grinding clinker grinding narrow particle size distribution, it can improve cement particle distribution, lower average particle size and characteristics and increase uniformity coefficient, so as to enhance the strength of concrete material.
(1)Pre-grinding process
Use of pre-grinding of cement grinding process, in the new dry process production line of more than 2, 000 t/d, was widely used and has become a new trend, pre-grinding equipment, mainly roller press and vertical mill (roller mill).
(2)Inner structure improving inside the ball mill
The ball mill inner structure is the important factor which influencing the grinding capacity, the important for the improving of close circuit grinding system is to improve the mill liner and grinding media graduation. Normally in cement mill, the first bin adopt the step liner which has higher lifting capacity, second bin adopt classification liner composted by two kind of liner, this kind of classification liner is easy for grinding media grading, completely bring grinding function into full play.
(3)Using Horomill (horizontal roller mill) and the high efficiency separator machine composed of closed-circuit grinding system.
The grinding system consisting of Horomill and TSV Separator compare energy ball mill to save 33% ~ 39% energy, then cement grinding power consumption up to 25 kW / ton (surface area of 420 m2/ kg). Products particle distribution is similar to ball mill, but the strength of cement is increased slightly. The main equipments of this mill grinding system is less and the process is simple and convenient layout, then construction and civil engineering costs can be significantly reduced. This mill stable than the vertical mill operation, high efficiency, small load cycles than the roller press, the pressure is low, currently at home and abroad has been used for more than 20 units, operating normally.
2. Open-circuit grinding system
(1)Transformation of open-circuit grinding system is mainly by high-yielding and fine grinding technology,
The bin quantity is different. The high fitness high capacity mill is set one to two bin more than common tube mill, the bin quantity is decided according to the mill size and its rate of length and diamter(L/D)
(2)The proportion of bin is different. Readjust the proportion of bin, compare the common tube mill, it short the length of steel ball bin, increase the length of steel bar
(3)It set double layer between bins. In high fitness high capacity tube mill, it set double layer diaphragm for dividing each bin. It set double layer diaphragm with dividing unit for separating the coarse particle and fitness, its function and principle is similar with the separator.
(4)Adopt diaphragm which is small grate holebig ventilation. The grate hole of diaphragm width is 6mm. The effective area of grate hole is about 15%.
(5)The grinding media graduationsize is different. According to the different ground material, cement type and etc, each bin will use different type grinding meida.
(6)The high fitness high capacity tube mill is modified according to the above mentioned items, the material is treated in order from crushing to grinding, finally to finished product and then discharged out of mill.
(7)Adopt high fitness technical to improve the common open-circuit mill, it can increase 20% of the mill capacity, the fitness decrease about 1.5%, the specific surface area increase about 35m2/kg.
Jiangsu Kehang Environment Engineering Technology Co., Ltd. is a high-tech enterprise which is held by Jiangsu Kehang Group, which is the first key enterprise of Yancheng Environmental Protection Base of National Torch Plan. We are specializing in researching, manufacturing, designing, and installing new dry cement production lines for industrial solid waste recycling complete technical plants.
Our group is the Vice-chairman Unit of China Building Material Machine Industry Association, the Skeleton Company of China Environment Protection Industry, and the member unit of China Cement Association. Our group has set up 10 offices and 11 service stations in Sichuan, Beijing, Nanjing, Inner Mongolia, Liaoning, Hunan and Guangxi.
We have gained the honors of National New and Advanced Technology Enterprise, Provincial Famous Brand, Provincial Famous Building Material Enterprise, Honoring Contract and Keeping Promise Enterprise, and the Promotion Unit of Provincial Intellectual Property Strategy. We have firstly passed the certifications of ISO9001, ISO14001, OHSAS18001 and SHEQ in the industry. At the same time, our group has passed expert inspection. We have gained the titles of the Achievement Hatching Base of Tsinghua University, Provincial Project Research Center in Solid Waste Recycling, the Environment Protecting Sub Centre of National Building Material Industry Promote Centre, Provincial Enterprise Technology Centre, and the Innovation Centre of Environmental-protection and Energy-saving Technology of Jiangsu Province. In addition, our group has abilities in environment engineering design and the operation of environment pollution control equipment. We have had the general contracting certification Class B in environment engineering.
Our group has one 133mu (8.87 hectares) production base, and has various testing and detecting equipments such as numerical vertical lathes, large-scale floor borers, automatic space sub-merged arc welding devices, and photoelectric tracer cutters. Our company has 500 staff members including 110 specialists which form our R&D ability and engineering design strength. The specialization of technology, diversification of specification and individual service have made Kehang products more competitive.
Up to Aug. In 2009, our group had gained many honors, such as provincial high-tech products for 8 times, more than 80 national patents, 2 National Torch Programs, and National Environmental-protection certified Products for 4 times. Our mature and applicable equipment has been used in 2000 enterprises in cement, gypsum, steel and power industries, such as Conch Group, Shanshui Group, Huaxin Cement Group, Tianrui Group, Yatai Group, Vietnam Yaguang Group, and Bengal Sylon Group.
Through years' development, Kehang's staff members have formed six developing thoughts like: Human resource, business culture, the R&D of products, marketing, intensive operation and service honestly. The idea decides the future, and the character decides the products. Under the guideline of new thoughts and new concepts, and based on the aim of Technology Make Model, we pay special attention to the Progress in Science and Technology, market development and excellent project making, to make our enterprise to be the most popular production base of complete cement equipment at home.
