With the rapid development of the new energy vehicle industry, the supply and demand of positive and negative electrode materials for lithium-ion power batteries continues to rise. This has driven the demand for upstream positive electrode raw materials such as lithium salts, cobalt salts, nickel salts, and manganese-based materials.
At present, the extraction process of lithium carbonate, a key material for the positive electrode of lithium batteries, is divided into two categories: ore extraction and salt lake brine extraction. In nature, lithium-containing ores mainly include spodumene, lepidolite, and petalite. Among them, spodumene has a high lithium content and is the most important lithium mineral resource. Whether it is lithium salt, cobalt salt, nickel salt or manganese-based material, the raw materials need to be ground to a certain fineness to meet the needs of the next step of roasting or leaching.
LIMING Provides an integrated comprehensive solution for grinding equipment
OreCrushing and grinding
Roasting materials Fine grinding
Industrial furnace Coal powder preparation
LM series vertical roller mill is a special equipment for the preparation of key materials in the new energy industry. It is a large-scale high-efficiency and energy-saving grinding product developed by Liming Heavy Industry with comprehensive introduction of superior technologies from Germany's Loesche and Feifan, combined with our company's nearly 40 years of R&D and manufacturing experience. It integrates crushing, drying, grinding, grading and conveying. It has a number of independent patent technologies and intellectual property rights. The main technical and economic indicators have reached the international advanced level.
LM series vertical ore mill
Finished product fineness: 20-400 mesh (0.84-0.038mm)
Applicable to nickel ore, cobalt ore, lithium ore, manganese ore and other ore grinding and roasting material grinding
Simple operation
Reliable operation
High grinding efficiency
High finished product quality
Low energy consumption
Low wear
Negative pressure operation
Green and environmentally friendly
High drying efficiency
Automatic slag discharge
Small footprint
Low investment cost
The motor drives the reducer to drive the grinding disc to rotate. The material to be ground is fed into the center of the rotating grinding disc by the air-locking feeding device. Under the action of centrifugal force, the material moves to the periphery of the grinding disc and enters the grinding roller. Under the pressure of the grinding roller, the material is crushed by extrusion grinding and shearing. At the same time, hot air is evenly ejected upward from the wind ring surrounding the grinding disc at high speed. The ground material is blown up by the high-speed airflow at the wind ring. On the one hand, the coarser material is blown back to the grinding disc for re-grinding, and on the other hand the suspended material is dried. The fine powder is brought into the separator by the hot air for classification. The qualified fine powder is discharged from the mill along with the air flow and collected by the dust collection equipment as the product. The unqualified coarse powder falls back to the grinding disc under the action of the separator blades and is re-grinded with the newly fed material. This cycle completes the entire grinding process.
LM series vertical coal mill
Finished product fineness: R0.08=10-20% (200 mesh 80-90% pass)
Suitable for industrial furnace coal powder preparation
Economic investment
Low operating cost
Low energy consumption
Low wear
Large drying capacity
High finished product output
Five-level safety
Explosion-proof measures
High degree of automation
No dust spillover
Green and environmental protection
Raw coal is sieved through the lattice screen from the raw coal yard and falls onto the high-angle belt conveyor or elevator. After the electromagnetic iron remover removes iron, the belt conveyor or elevator sends the raw coal to the raw coal bunker for storage. After the pulverizing system has been started, open the rod valve at the bottom of the raw coal bunker, start the sealed metering belt coal feeder, and the raw coal enters the vertical coal mill for drying and grinding. The hot air or exhaust gas from the hot blast furnace enters the vertical coal mill under the extraction of the system fan. After sufficient heat exchange with the raw coal being ground in the mill, it brings up the coal powder for sorting in the separator. The unqualified coarse coal powder falls back on the grinding disc for grinding. The qualified coal powder enters the explosion-proof air box pulse dust collector with the air flow and is collected, and then unloaded into the coal powder bin through the grid wheel. The sundries in the raw coal, such as some coal gangue, metal blocks, etc., are discharged from the mill through the wind ring slag outlet. In the whole process, a CO-02 online analysis system is set up. When processing coal with high volatile content, safety measures such as nitrogen protection and CO2 automatic fire extinguishing system can be set up.
Liming Heavy Industry is committed to building a high- quality grinding system comprehensive service provider brand, adhering to the principle of "customer success is our success", with a professional design institute team, constantly exploring, and fully providing customers with customized grinding engineering EPC general contracting services, from the initial project establishment to the final production of the whole process guidance, to ensure that customers' integrated and high-quality needs are met.
Liming Heavy Industry is a pioneer in grinding equipment technology, system solutions and services in the global powder new materials, mineral grinding processing and resource recycling industries.
Founded in 1987, the company covers a total area of more than 1,600 acres. With Zhengzhou, Shanghai and Changsha as the core areas, it has four major production and operation bases, serving more than 30,000 customers in more than 180 countries and regions, and has obtained more than 280 patents. It is the first in the industry to pass ISO9001 international quality system certification, EU CE certification, and Customs Union CU-TR certification.
Focusing on customer needs in different fields, the product processing range covers 1-3mm coarse powder, 20-400 mesh fine powder, 400-1250 mesh ultrafine powder and 1250-3250 mesh micro powder, covering the entire process chain of new material mineral grinding and processing.
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