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1. Production scale, production method and cement types 1.1 Production method The production method is dry process. A rotary kiln(φ 3.5× 54m) production line with five-stage cyclone pre-heater and decomposition furnace will be adopted. 1.2 Production scale and capacity The production capacity is 1500t/d for clinker, while 500, 000t/a for Portland cement when mixed with gypsum. 1.3 Cement types The technology and equipment adopted can produce 32.5MP and 42.5MP types of cement in accordance with Chinese Standard GB175-1999. They can be adjusted according to market demand. 3. Main technical characteristics 3.1 This production line adopts advanced technology and equipment in 1990s to raise technical level and to ensure design indexes. New five-stage cyclone pre-heater system, high efficiency air girder grate cooler, multi-passage pulverized coal burner, Davison heat temperature fan, Luqi BS930 electrical dust collector, as well as chain-board elevator, chain conveyor adopted in this production line can ensure that the technology is advanced compared to other production lines with the same scale. 3.2 If it has not bad influences on completeness, continuity and reliability, process procedures will be simplified to enhance production management, reduce troubles and lower investment. 3.3 Top of silos are without covers, heat temperature fan and dust collectors are open arranged and glass fiber rainproof covers instead of roofs will be set for belt conveyor passages. There will be no building for bucket elevator. If it has not bad influences on normal production, by properly reducing storage periods for all raw materials, semi-product and finished product and adopting shed to store those materials and products, civil engineering costs will be greatly reduced. Frame for pre-heater at kiln inlet will adopt steel structure to save investment, accelerate erection speed and beautify building. 3.4 Measures have been taken to save energy and reduce consumption. Using chain-board elevator and air slides, reliability of the system is enhanced and conveying energy consumption is decreased. 3.5 All necessary parts will adopt measuring equipment to guarantee scientific management. For example, there are measuring equipment at those parts such as raw meal blending, raw materials entering into plant, raw meal feeding to kiln, pulverized coal feeding to kiln, clinker outgoing kiln and clinker outgoing silos. 3.6 Effective measures have been taken to guarantee strict environment protection standards. Different efficient dust collectors are set at all dust producing points according to different characteristics of waste gas. As we are not sure about raw materials, fuel, power supply (electricity voltage grade and frequency), water source and the site conditions, the quotation was made just according to normal conditions and requirements in China, it shall be finalized after formal design.
