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
| Product specifications(m) | Kiln dimensions | Capacity(t/d) | Rotation speed(r/min) | Motor power(kw) | Total weight(t) | Note |
| Diameter(m) | Length(m) | Obliquity(%) |
| Φ2.5×40 | 2.5 | 40 | 3.5 | 180 | 0.44-2.44 | 55 | 149.61 | Kiln with shaft cyclone preheater |
| Φ2.5×50 | 2.5 | 50 | 3 | 200 | 0.62-1.86 | 55 | 187.37 | ---- |
| Φ2.5×54 | 2.5 | 54 | 3.5 | 204 | 0.48-1.45 | 55 | 196.29 | ---- |
| Φ2.7×42 | 2.7 | 42 | 3.5 | 320 | 0.10-1.52 | 55 | 198.5 | ---- |
| Φ2.8×44 | 2.8 | 44 | 3.5 | 400 | 0.437-2.18 | 55 | 201.58 | Outside disassemble kiln |
| Φ3.0×45 | 3 | 45 | 3.5 | 500 | 0.5-2.47 | 75 | 210.94 | ---- |
| Φ3.0×48 | 3 | 48 | 3.5 | 700 | 0.6-3.48 | 100 | 237 | Outside disassemble kiln |
| Φ3.0×60 | 3 | 60 | 3.5 | 300 | 0.3-2 | 100 | 310 | Alumyte-alumina forge kiln |
| Φ3.2×50 | 3.2 | 50 | 4 | 1000 | 0.6-3 | 125 | 278 | Outside disassemble kiln |
| Φ3.3×52 | 3.3 | 52 | 3.5 | 1300 | 0.266-2.66 | 125 | 283 | Kiln with preheater precalcine |
| Φ3.5×54 | 3.5 | 54 | 3.5 | 1500 | 0.55-3.4 | 220 | 363 | Kiln with preheater precalcine |
| Φ3.6×70 | 3.6 | 70 | 3.5 | 1800 | 0.25-1.25 | 125 | 419 | Generating kiln for using ofterheat |
| Φ4.0×56 | 4 | 56 | 4 | 2300 | 0.41-4.07 | 315 | 456 | Kiln with preheater precalcine |
| Φ4.0×60 | 4 | 60 | 3.5 | 2500 | 0.396-3.96 | 315 | 510 | Kiln with preheater precalcine |
| Φ4.2×60 | 4.2 | 60 | 4 | 2750 | 0.4-3.98 | 375 | 633 | Kiln with preheater precalcine |
| Φ4.3×60 | 4.3 | 60 | 3.5 | 3200 | 0.396-3.96 | 375 | 583 | Kiln with preheater precalcine
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