Home / News

How Can Limestone Mines be Used for Greater Benefit2023-07-27 14:32:04

 Limestone Development Status

Limestone is a common non-metallic mineral, which is a valuable resource for a wide range of uses. Limestone is the trade name for limestone as a mineral raw material. Limestone has been widely used in the history of human civilization because of its wide distribution and easy access in nature.
As an important building material has a long history of mining, in modern industry, limestone is the main raw material for the manufacture of cement, lime, calcium carbide, is an indispensable flux limestone in the metallurgical industry, high-quality limestone after ultrafine grinding, is widely used in paper, rubber, paint, coatings, medicine, cosmetics, feed, sealing, bonding, polishing and other products manufacturing.

According to incomplete statistics, the total ratio of limestone and building stone consumed in cement production, lime production, metallurgical flux, and ultra-fine calcium carbonate consumed limestone is 1∶3.
Limestone can also be used to make glass, soda ash, caustic soda, etc., iron making limestone as a flux, remove gangue, slag making materials with quick lime, remove sulfur, phosphorus and other harmful impurities.
In life, limestone processing into a purer powdered calcium carbonate, used as rubber, plastic, paper, toothpaste, cosmetics and other fillers. In agriculture, lime sulfur mixture, Bordeaux liquid and other pesticides are prepared with quick lime. The application of hydrated lime in the soil can neutralize the acidity of the soil, improve the structure of the soil, and supply the calcium required by the plants. Brush the trunk with lime paste to protect the tree. The chemical industry uses the chemical processing of limestone to make calcium chloride, calcium nitrate, calcium sulfite and other important calcium salts.

Limestone Mining and Utilization Rate is Low

Limestone mining is mostly private mining, there are many large and medium-sized enterprises do not own mines, rely on the acquisition of limestone production.
People generally have little mining planning for limestone mining, indiscriminate mining, which part of the mineral to meet the needs of customers where to dig, causing a great waste of limestone resources. The resource utilization rate of the regular mining limestone mines has reached more than 90%, while the resource utilization rate of the private mining mountain is only 40%, because the private mining is greater than the mechanized mining amount, the utilization rate of the entire limestone is about 60%.

Another problem of private mining is that there are several or even a dozen small mining mines around a mountain. This backward mining method not only has low labor efficiency, large safety risks, and serious waste of resources, but also causes large-scale destruction of the mountain and serious harm to the ecological environment around the mining area.
How to incorporate the latest mining technology into the overall planning of enterprise technology, make overall planning for the development of mines, deal with the relationship between recent mining, high grade and low grade, high quality and low quality, reasonable mining, comprehensive utilization, reduce stripping ratio, and expand the utilization rate of mine resources, is very important.

Comprehensive Utilization Method of Limestone Mine

 The raw limestone ore is sent to the crushing setting by a vibrating feeder (jaw crusher, impact crusher or cone crusher can be used when secondary crushing is required). Then it is sent to the grinding mill by the screening equipment, and the grinding mill is divided into three kinds according to its own needs: YGM Raymond mill (can produce ordinary heavy calcium powder), HGM ultrafine ring roller grinding mill (can produce middle-high-end heavy calcium powder), CLUM ultrafine vertical grinding mill (can produce high-end heavy calcium powder).

Limestone Application Field Table

Fineness of Grinding Application Equipment Recommendation
Under 200 mesh Lightweight brick, soil conditioner, etc YGM Raymond Mill
200~325 mesh Desulfurization powder,building supplies,glass,chalk, etc HGM Ultrafine Ring Roller Grinding Mill
400~800 mesh Rubber,plastics, sealing materials, chemicals, toothpaste, etc HGM Ultrafine Ring Roller Grinding Mill
1250~1500 mesh Paint,stationery, cable, cosmetics,medicine, etc HGM Ultrafine Ring Roller Grinding Mill / CLUM Ultrafine vertical Grinding Mill
2000~3000 mesh High-end paper, high-end PVC, high-end filler, high-end silicone glue,etc CLUM Ultrafine vertical Grinding Mill

Introduction to The Grinding Mill

YGM Raymond Mill

Capacity:1~50 t/h
Powder Fineness:80~325 mesh
The machine adopts the advanced structure of similar products at home and abroad, and updates and improves the design on the basis of Raymond mill in the same industry. The equipment has high efficiency, low power consumption, small footprint and small one-time investment than the ball mill. The grinding roller is tightly rolled on the grinding ring under the action of centrifugal force, so when the grinding roller and the grinding ring wear to a certain thickness, the yield and fineness of the finished product will not be affected. The replacement cycle of the grinding roller and grinding ring is long, which eliminates the disadvantage of the short replacement cycle of the wearing parts of the centrifugal mill. The airflow of the machine is circulating in the fan - grinding shell - cyclone separator - fan, so it is less dust than the high-speed centrifugal mill, and the operation workshop is clean and the environment is free from pollution.

HGM Ultrafine Ring Roller Grinding Mill

Capacity:0.5~45 t/h
Powder Fineness:300~3000 mesh
Ultrafine ring roller mill is a kind of highly efficient and low energy consumption ultrafine powder processing equipment designed by Clirik R & D center after many innovations, tests and designs, successfully replacing the complex process of ball mill grinding and powder selection, greatly reducing the production cost and improving the powder fineness. Proven by thousands of users around the world, the equipment has the advantages of superior performance, stable quality, simple operation, easy maintenance, etc., and is the ideal equipment for ultrafine powder processing.

CLUM Ultrafine Vertical Grinding Mill

Capacity:0.5~45 t/h
Powder Fineness:300~3000 mesh
CLUM series ultrafine vertical grinding machine is a comprehensive large-scale grinding equipment designed and developed by Clirik combined with years of grinding production experience and the introduction of ultrafine vertical grinding technology from Taiwan and Germany. The content of the equipment can be as high as 60%. At the same time, it is equipped with an integrated intelligent automatic control system to adjust the system Settings online during operation. Effectively reduce labor costs. The three indexes of powder particle type, gradation and powder content can be greatly improved, so that the gradation is reasonable, the particle type is round and the powder content is controllable. The overall seal is good, the powder is directly sent to the finished product warehouse by the gas conveying equipment, there is no powder overflow, the production environment is clean, and it meets the national green environmental protection requirements. Can build a high capacity, high performance, high intelligence, high environmental protection of the limestone production line, greatly enhance the market competitiveness, so as to obtain more high-end product market.


Previous:Limestone Grianding Mill and Limestone Pulverizing Process