The ideal equipment of gypsum powder grinding mill - column

                           The ideal equipment of gypsum powder grinding mill - column

One, foreword gypsum mines in our country is rich, has proven reserves of 57 billion tons, prospects for reserves is 100 billion tons. But at present domestic gypsum production in only 24 million tons, and mostly in the form of ore or primary products into the market at home and abroad, cause serious loss and waste of resources. With the development of our country's economy, the increasing demand for new building materials, gypsum as a new type of building decoration materials, because of its no pollution to the environment, and the characteristics of energy saving, environmental protection, has a good development prospect. Though since the reform and opening, gypsum technology has developed rapidly in our country, but the gypsum industry started relatively late, it is belong to the sunrise industry, in terms of technology, although the gap with developed countries in a shortened, but the backward equipment still restricts the development of the gypsum industry in our country, and column mill arises at the historic moment, will bring the Gospel to domestic gypsum processing industry. 2, column mill profile 1, the principle and structure of the column column mill grinding machine adopts the novel medium speed pulse and continuous repeated low pressure roller grinding principle and scientific structure design, so it also has a high roller press and the performance of the roller mill, and without its drawbacks. When the motor drives the reduction gear make main shaft spins, installed on the spindle bearing and installed in the seat of several roller rotation in the taper ring lining, roll wheel and lined with adjustable gap between the two, after the material from the inlet into the mill, upper by gravity and pushing effect, make the material evenly from top to bottom through around the edges of the lining and repeatedly by the roller rolling into powder, finally from the lower part of mill automatic discharge. Due to the roller relative to the revolution of the lining board for rules and rotation, and can be as the thickness of material layer and material particle size and flexible movements, and there is no contact between the roller and plate, avoiding the due to the impact of energy consumption and the wear between them, and the material here is reasonable, repeatedly rolling and grinding, and grinding roller and plate material is made of the current domestic wear resistance better multielement wear-resisting alloy steel, so as to minimize the material processing machinery for processing of iron powders in the process of pollution

2, work characteristics: column mill compared with other traditional grinding equipment, has the following characteristics: 1) a large range power saving, low production cost; 2) wearing parts consumption, can reduce the production cost, but also reduce the pollution of the special requirements of material of iron (iron pollution can be reduced to two over one hundred thousand); 3) fineness is adjustable, can strictly control the product particle size range; 4) small volume, simple and convenient installation, can save construction investment; 5) low noise, less dust, good environmental protection effect; 6) good mechanical performance, simple operation, convenient maintenance. 3, column mill main technological process in the production of gypsum: closed-circuit grinding system: by cylindrical grinding machine, efficient classifier (or vibrating screen) and the hoist and so on, the product fineness can be adjusted and controlled. 4, main technical parameter table column mill product model ZMJ ZMJ ZMJ ZMJ - 450-500-750-900 ZMJ ZMJ - 1050-1150 production capacity (T/h) 3-4 5-6 8-10 of 13-15 and 22-26 to 28-32 biggest feed particle size (mm) 15, 25 and 30 and 40 to 50 product fineness (mesh) of 50-100-100-100-100-100-100 motor power (KW) 37 to 55, 75, 110, 160, 185 equipment installation dimensions ф ф 1.84 x 1.5 x 1.85 2.5 2.7 ф ф 1.9 x 2.5 x 3.3 4.4 ф ф 2.9 x 3.4 x 4.7 3, column in the analysis of application of gypsum powder grinding mill at present, gypsum processing more than 400 enterprises in our country, but it can scale and grade a handful of enterprise, one of the key problems, is the backward processing equipment. After joining the WTO foreign high-quality will moved into new building materials in recent years, in the early, they will certainly take strategy and national industry to compete with them, only scale can improve the quality, reduce cost, the traditional grinding equipment is far cannot meet such requirement. Column mill in the gypsum powder mill showed remarkable function, solved the problem successfully. Because of column mill unique working principle, the guarantee to achieve the requirements of the product fineness at the same time, also can improve the morphology of gypsum particles and grading. Tests show that cylindrical grinding machine after grinding gypsum can make the rules of gypsum crystal plate and the scale of the uniform is destroyed, the particle morphology rendering columnar, slab, such as granular diversification. Made of gypsum products more stable quality, superior performance. In addition, due to the cylindrical grinding machine adopts medium medium voltage, repeated rolling, and the roller and plate never contact, can make its service life of wearing parts for several years, greatly reduce the equipment maintenanceThe difficulty of management, improve the production efficiency and its utilization rate can reach more than 95%. Four, cylindrical grinding machines and other equipment in the application of the gypsum powder mill is 1, column mill and Raymond mill is a gypsum products factory in shandong province, the original use Raymond mill, its high yield, low energy consumption, high failure rate, large dust, not only equipment management is difficult, much because when production is low, restricted the plant scale production. In 2000 the introduction of column mill ZMJ900 for gypsum powder grinding. Its technological process is as follows: ore hammer crusher bin column mill separator coarse product unqualified particles by sorting machine automatic return column mill through one year production practice, the column mill and Raymond mill compared with the results as follows:Column mill ZMJ900 a 4 4 r Raymond machines feed particle size 40 mm < < 25 mm system power 160 kw 4 x 82 = 328 kw product fineness - 120 yard to 120 yard 14 t/h 14 t/h production parts loss in a set of 10 months in a year and a half of a set of < 80 db noise < 100 db (a) five, column mill in gypsum industry is a part of the user use milling maxhine production note shandong taierhchuang ZMJ900S 13 t/h side paste industry in October 2002, shandong xingyuan mining co., LTD ZMJ900S 15 t/h in June 2005, China building materials co., LTD in jiangsu ZMJ900S 13.5 t/h in July 2003, shandong pingyi white gypsum co., LTD ZMJ750S 10 t/h in August 2002, the shandong coal group co., LTD. Xin countries ZMJ750S 8 August 6, 2005 t/h conclusion gypsum products, as a new type of building material, its function has been recognized for the world of green environmental protection, used in building materials have been developed abroad for over one hundred years, no matter in technology, on the management of the market has been very mature, after the use of the popularization of the social and economic benefits are clear. Gypsum deposits in the world the first place, as soon as possible the resource advantage into economic advantage, its profound and significant. Gypsum production enterprises are also working to update technology, seeking the advanced processing equipment. Column and environmentally friendly grinding machining system will be the development and promotion of the green material. Add: gypsum production process flow diagram