China provides construction funds zero investment cement production line cement plant

Product Description(cement plant)

Introduction of Portland Cement

Development History and Development Trend of Cement Industry

• 1824: ordinary vertical kiln - annual output of about 2 thousand tons;
• 1877: dry hollow rotary kiln - an annual output of about 10 thousand tons;
• 1910: mechanized vertical kiln - annual output of above ten thousand tons;
• 1928: Lepol kiln- annual output of more than 100 thousand tons;
• 1950: suspension preheater kiln - annual output of hundreds of thousands of tons, lower thermal consumption;
• 1971: pre-decomposed kiln- annual output of several million tons, more than 10 thousand tons of daily output, high quality, low heat consumption, less power consumption, beautiful environment, resources have been fully utilized.

Automation: using computers and distributed control technology, greatly improves the control and management

capabilities, and improves production efficiency;

High efficiency and energy saving: so far, the power consumption of the advanced cement enterprises in the world can reach 60kwh/t.ck, and the minimum coal consumption can reach 80kg/t.ck;

Environmental protection ecology: new dry process cement enterprises adopt advanced dust collection equipment,

strictly control dust emission and noise pollution, and have a beautiful environment and resources have been fully

utilized

The process of constructing whole cement productionlines-we put the raw materials(limestone, clay and iron corrective raw material) used for producing cement, homogenizing and mixed together by scientific proportion, then raw mill grinds them to a suitable size as raw material powder, the raw powders are preheated by a preheaterthen are decomposed in decomposing furnace, then calcined into cement clinker in the rotary kiln by high temperature, adding proper retarderand composite material then grind into powder by cement mill, finally obtain cement production.

Process Flow Diagram of the Cement Production Line

Technical lndex

Main Technical lndexes:

Pre-project design, geological prospecting, civil engineering construction, equipment installation, electrical equipment, equipment manufacturing, project supervision(including engineering, equipment), drawings,implementation of the national standard(GB) of People's Republicof China;

Technical and economic indicators of products:

Clinker: more than2500t/d;

The heat consumption of clinker sintering: less than830kCal/kg(3476.4KJ/kg);

Comprehensive energy consumption of cement units: less than104 kWh/t;

All dust collectors emission: less than or equal to30mg/ Nm3;

The strength of clinker: more than55MPa(28 days average compressive strength)

Fuel: 120kg coal required for produce one ton cement

Raw material: 1~1.45 ton raw material required for produce one ton cement Powder: 104kwh required for produce one ton cementdepreciation of equipment: depreciation of equipment is at8%/year

Technical Parameters of Rotary Kiln