High efficiency universal rotary kiln process for cement, mineral and chemical industry

High efficiency universal rotary kiln process for cement, mineral and chemical industry

          Rotary Kiln belongs to building material equipment, according to different materials, which can be divided into cement kiln, metallurgy chemical kiln and lime kiln. Cement kiln is used for making cement clinker and there are dry and wet methods to make cement clinker. Metallurgy chemical kiln is widely used for magnetic roasting of poor iron ore and oxidizing roasting of chrome and nickel in the steel factory; backing high-alumina mine in the refractory material factory; baking chamotte and alumina in the aluminum factory and baking chrome ore and chrome powder in the chemical plant. The Lime Kiln is used for roasting active lime in steel works and ferroalloy plants and light roasting dolomite.

         The kiln is a cylindrical vessel, inclined slightly to the horizontal, which is rotated slowly around its axis. The material to be processed is fed into the upper end of the cylinder. As the kiln rotates, the materials gradually move down towards the lower end, and may undergo a certain amount of stirring and mixing. Hot gases pass along the kiln sometimes in the same direction as the process material (co-current), but usually in the opposite direction (counter-current). The hot gases may be generated in an external furnace, or may be generated by a flame inside the kiln. Such a flame is projected from a burner-pipe (or 'firing pipe') which acts like a large burner. The fuel may be gas, oil or pulverized coal.

           Zhejiang Tongli Heavy Machinery Manufacturing Co.,ltd is specialized intechnology R&D, engineering consultation , equipment debugging, engineering contracting and related technical services for manufacturing cement, building material, mining, environmental protection, metallurgy, chemical equipment. Tongli Heavy Machinery  Co.,ltd established in 1958year, is a member of the China Building Material Machinery Association, a leading enterprise of China Cement Machinery, on the vendor of designated manufacturers for coal industry mechanical and electrical equipments, ISO9001:2008 accredited and accredited as a high-tech & new technology enterprise of Zhejiang Province, national designated “defend the contract heavy credit enterprise”, modern enterprise of national top ten cement grinding system of technologies and equipment , at the top of cement equipment manufacturing in Zhejiang Province.

       The Tongli occupies 153800m2 and the construction area of the workshop is 85000m2,the maximum lifting capacity of a single head crane is 200t. The company is equipped with more than 100 sets of heavy machinery manufacturing equipments such asφ5.3×18m(The lifting capacity is 200t)digital control horizontal lathe, φ5.5×18m lathe for machining shell, φ8m heavy digital display vertical lathe, φ8.0m heavy hobbing machine, 14×5m CNC vertical milling & boring machine, 3.4×10m CNC gantry milling & boring machine, 120mm digital control plate bending rolls, φ6.5×20m large size annealing furnace, φ6.5×20m sand blasting room, 1800t four columns hydraulic press, 10t electric arc furnace, etc, the integrated machinery processing ability is very strong.

          After working hard for more than 56 years, the company has the first-class science and technology development centers and craftsmen team who have much experience and skilled technology, specially manufactures series of cement machinery main equipments with independent intellectual property such as slag vertical mill, raw material vertical mill, cement vertical mill, coal vertical mill and rotary kiln, cement mill, wind swept coal mill, dryer, etc; in the meantime, manufactures the equipments and large- sized structural workpieces such as compound fertilizer, mining, power generating, sewage sludge (waste)incineration systems, etc, the products are exported widely toover 1000 companies from sixty or more countries such as Germany, Russia, Brazil, Egypt ,Iran, Bangladesh, Pakistan, Turkey, Myanmar, Vietnam, Columbia, Bolivia, South Africa, etc.