Concrete is a kind of fine grinding materials, when added to water then becomes a substance that can bind other materials such as sand, rock etc. together firmly. This substance can become hard both in the air and water. The concrete is one of the most popular building materials and engineering materials during inorganic nonmetallic materials, and is popular used in construction , water conservancy, roads, petroleum, chemical engineering and military engineering etc.
Concrete is termite-resistant, non-combustible, and can last up to fifty years if the mixture and timing is compatible. This can be very helpful when building a sturdy, stationary, platform or foundation on any residential or commercial property.
The concrete is an essential materials in building works and other structures for wide application, stable performance and the fine structure and properties of the finished products, and There could be no other material can be completely replace it in the future

The main chemical composition of Portland concrete clinker is calcium oxide, silicon oxide , aluminum oxide and ferric oxide.
The calcium oxide mainly comes from Limy materials or Calcareous material, such as limestone, Marl, chalky clay, marble etc. The silicon oxide and aluminum oxide mainly come from materials containing aluminum silicate, such as Clay, blast furnace slag, pulverized fuel ash etc. The ferric oxide mainly comes from pyrite cinder.

Portland concrete: the concrete general use in Civil and Architectural Engineering. There are six kinds of Portland concrete, they are Portland blastfurnace concrete, Portland flyash concrete, Portland pozzolan concrete, Portland silica fume concrete., Masonry concretes, Expansive concretes, White blended concretes, Colored concretes, Very finely ground concretes.

special concrete: such as Ordinary oil well concrete, Portland concrete for road.

characteristic concrete: such as Rapid harding portland concrete, low heat Portland slag concrete, sulphate aluminium concrete etc.

Due to the high temperatures inside concrete kilns, combined with the oxidizing (oxygen-rich) atmosphere and long residence times, concrete kilns have been used as a processing option for various types of waste streams. The waste streams often contain combustible material which allows the substitution of part of the fossil fuel normally used in the process.
Portland concrete manufacture also has the potential to remove industrial byproducts from the waste-stream, effectively sequestering some environmentally damaging wastes.

1) Limestone crusher;    2) Limestone prehomogenizing yard;     3) Batch calculation    4) Additive;          5) Crusher;     6) Additive yard;    7) Dust collection;     8) Raw mill;     9) Homogenization silo;     10) Feeding calculation;     11) preheater ;     12) Humidifier tower;     13) Rotary kiln;     14) Cooler;     15) Raw coal;     16) Coal yard;     17) Electric precipitator;     18) Coal mill;     19) Burgy precipitator;     20) Clinker silo;     21) High pressure grinding roll;     22) Ball mill;     23) Gypsum;     24) Concrete precipitator;     25) Concrete storage;     26) Packer;     27) car stowage;     28) car loader;     29) train stowage;     30) port silo;     31) bulk concrete

Concrete is pulverized with the mixture of limestone, clay, and iron ore powder in proportion. At this time the mixture is called raw materials. Followed by calcination, the general temperature is of 1450 degrees. After calcination, the product is called clinker. Then according to a certain percentage, the clinker is mixed with gypsum. The mixture is then grinded to the required fineness. Here you have produced concrete. This is only a general description. Here you can learn about the whole process in detail.