Mineral Processing PlantYou are here:Home > Minerals > Industrial Milling >

Limestone

Limestone, also known as calcium carbonate, a kind of compound, whose chemical formula is CaCO3, CAS number 34-471-1. It is a common substance on earth, which can be found in the rocks. It is the main component of animal back shell and snail shells, exists in nature by calcite and aragonite the two kinds of minerals. Calcite belongs to trigonal system, it’s the hexagonal crystal, and pure calcite is colorless, it’s white in usual. It’s containing 56% CaO, 44% CO2, the density is 2.715g / cm³, the Mohs’ scale of hardness is 3, it’s brittle. Aragonite belongs to orthorhombic strain, it’s the diamond crystal, and the color is gray or white, the density is 2.94g/cm³, the scale of Mohs’ hardness is 3.5 to 4. In the physical properties of limestone, calcite crystal size is very important. It has a high strength for dense limestone to show the fine crystal structure of low porosity. The density of limestone is 2.65~2.80g/cm³, dolomite limestone is 2.70-2.90g/cm³, and dolomite is 2.85-2.95g/cm³. The bulk density depends on the porosity.
Limestone

Technological Process

The common processing technology of limestone is using special grinder mill to mechanical pulverization it into powder, crushing limestone directly can get calcium carbonate. According to the different powder grinding fineness, it's divided into four different specifications on the industry, which are used in various industrial departments. Because limestone reactivity is close contacted with available magnesium content, hardness, grain size and crystalline morphology, improving Improve limestone fineness is an important research direction of technological development in the intra-industry, and it's also an important standard to determine the performance of the milling machine's pros and cons. At present, domestic manufacturers introduced various limestone powder milling equipment are developed from the traditional Raymond mill design process, it's specifically applicable to the deep processing production of limestone, this series flour milling machine uses a more sophisticated process design, can be very well suited for limestone processing. The basic working principle of this type grinder mill is: crusher broken the big lumps of raw material into the needed feed size, and transport the materials into the storage silo by the bucket, then evenly to the host of grinding chamber by electromagnetic vibrating feeder, the shovel and roller scooped the material between the feed mill roll ring toss to form a litter layer, the material is grinding between the grinding roller and grinding ring, in order to achieve the purpose of milling. After grinding the powder flow from the fan to the analysis machine,achieve fineness requirements' powder through the pipe into the large cyclone collector follow the airflow to make separation collection, and then discharged through the discharge is finished powder. Airflow is suction blower by the large cyclone collector return duct. The undesirable powder is thrown out of the outer wall to break away from the air by vanes, coarse fall into the grinding chamber for regrinding because of self-gravity. The airflow system of the machine is of the closed loop, and is in the state of negative pressure circulating. The process technology of limestone is commonly used special mill which mechanically pulverized into powder.

Application Fields

Limestone is the highly versatile valuable resource. Limestone in the history of human civilization, with its widely distributed in nature, easily accessible features have been widely used. As an important building material it has a long mining history, in modern industry, limestone is the main raw material manufacture of cement, lime, calcium carbide, and it also the indispensable limestone flux in metallurgical industry, after ultra-fine grinding the high quality limestone is widely used in the manufacturer of paper, rubber, paint, coatings, pharmaceuticals, cosmetics, animal feed, sealing, bonding, etc. According to incomplete statistics, the cement production’s consumption of limestone and building stone, lime production, metallurgical flux, calcium carbonate limestone consumption ratio of 1:3 sum. Limestone is a non-renewable resource, with the continuous progress of science and development of nanotechnology, limestone applications will be further widened.

Recommend products

YGMXO-Q4-Y European Enhanced Mill
YGMXO-Q4-Y European Enhanced Mill
YGMXO-Q4-Y European High Pressure Ultra-fine Grinder Mill is an innovative product upgraded on the basis of original grinders.
YGMXOK Series European Type Open Circuit Grinding Mill
YGMXOK Series European Type Open Circuit Grinding Mill
Vipeak manufacture stone grinding machine, concrete grinder mill and other advanced industrial mills for sale all over the world. Vipeak is a professional supplier of mills for grinding and sieving powder of limestone, mineral ore, barite,
HGM Series Micro-Powder Grinder Mill
HGM Series Micro-Powder Grinder Mill
Vipeak offers all types of micro grinding mill for sale. HGM micro powder mill is the updated plant based on the characteristics of traditional ultra fine grinding mill machine in China.
European Type High Pressure Ultrafine Grinder
European Type High Pressure Ultrafine Grinder
Ultra fine grinder also called ultra fine mill is used for cement grinding mill and other fine powder making industry.
YGMXO-Q European Reinforced Type Mill
YGMXO-Q European Reinforced Type Mill
Vipeak manufactures stone grinder mill includes roller mill and vertical roller mill for sale, with the best price and suitable for both of soft and hard stone.
SQLM1900-Q2 Upper-driven Vertical Mill
SQLM1900-Q2 Upper-driven Vertical Mill
SQLM1900-Q2 Type Upper-driven Vertical Mill is innovative high-end grinding equipment upgraded on the basis of original grinder by our senior powder experts who have learnt advanced grinding technology from home and abroad
Impact Crusher
Impact Crusher
Impact crusher is mainly used for crushing all types of stones, rock and gravel. Vipeak supply impact crusher for sale with different production capacity, and the impacter crusher is professional for making building materials.
PFT Reinforced Impact Crusher
PFT Reinforced Impact Crusher
Compare impact crusher price to buy? You can't ignore Vipeak stone impact crusher. China Vipeak manufacture and sell advanced rock impact crusher with great value for your choose.
Symons Cone Crusher
Symons Cone Crusher
Vipeak manufactures cone crusher, including stone cone crusher and symons cone crusher for sale with high quality and good price.
Reinforced Jaw Crusher
Reinforced Jaw Crusher
Vipeak is the excellent supplier of china jaw crusher. With the best jaw crusher price and perfect quality performance, Vipeak is your obvious choice of jaw crusher manufacturer in China.
ZY Series Self-aligning Damping Vibrating Screen
ZY Series Self-aligning Damping Vibrating Screen
ZY Series Self-aligning Damping Vibrating Screen is a new type of vibrating screen which Vipeaks researchers widely collect suggestion from installation and maintenance technicians based on the field operating conditions of YA, YK series vib
Jaw Crusher
Jaw Crusher
Jaw crusher machin is a primary crusher used in mining, construction.Manufacturer of stone jaw crusher and jaw crusher for sale please contact Vipeak.
VSI-B New Type Sand Maker
VSI-B New Type Sand Maker
As the best VSI crusher manufacturer in China, Vipeak provides all types of high quality artificial sand making machine. Vipeak has been named as the remarkable chinese supplier to sell VSI sand making machine.
5X Sand Making Machine
5X Sand Making Machine
Vipeak is famous supplier of china sand maker, with viarous types of sand making machine for sale. The sand maker can be applied to high grade artificial sand making process for material like limestone, granite, marble, river stone and so on
Fine Sand Device
Fine Sand Device
Vipeak recovery of sand device is produced based on advanced technology. Vipeak Sand recovery machine is your best choice of fine sand recycling machine, which is also widely used in water conservancy and hydropower, glass factory, coal pr
LSX Spiral Sand Washer
LSX Spiral Sand Washer
Sand washing plant manufactured by Vipeak at low cost are widely used in industrial sand washing. The sand washing equipment can be used for washing various kinds of coarse and fine sand.
XSD Sand Washing Machine
XSD Sand Washing Machine
Vipeak supplies fine quality sand washing machine with big capacity. Vipeak sand washer can be widely used in metallurgy, construction, hydropower station and other industries, and Vipeak sand washer machine is popular at home and abroad.
PCL Sand Making Machine
PCL Sand Making Machine
Sand machine is mainly used for crushing all types of stones, rock and gravel. Vipeak supplies sand maker machine with different production capacity and most advanced sand making process.