LM sand powder vertical mill - Large-scale high-efficiency and energy-saving sand powder preparation product
LM series sand powder vertical mill, also known as pre-grinding mill, is a large-scale high-efficiency and energy-saving sand powder preparation product developed by Liming Heavy Industry based on its nearly 40 years of R&D and manufacturing experience for the special mortar industry. It is professionally used for the production of 0-1mm (20-200 mesh) graded fine aggregate for special mortar and 1.18-2.36mm graded medium and fine aggregate for ordinary dry mortar. It has a number of independent patent technologies and intellectual property rights, and its main technical and economic indicators have reached the international advanced level.
Sand and powder are produced at the same time, energy-saving and efficient
Product fineness range:
Special mortar graded sand
20-40 mesh
40-70 mesh
70-140 mesh
140-200 mesh
Ordinary mortar graded sand
0-0.3mm
0.3-0.6mm
0.6-1.18mm
1.18-2.35mm
As a global high-end intelligent grinding equipment overall solution provider, Liming Heavy Industry has launched a new sand powder preparation process for the dry-mixed mortar industry, LM sand powder vertical mill, which solves the problems of low yield, poor particle grading, poor particle shape, and high energy consumption of traditional sand making processes, and has subverted the ideal preparation of high-quality graded sand for large-scale production of special mortar.
As a global high-end intelligent grinding equipment overall solution provider, Liming Heavy Industry has launched a new sand powder preparation process for the dry-mixed mortar industry, LM sand powder vertical mill, which solves the problems of low yield, poor particle grading, poor particle shape, and high energy consumption of traditional sand making processes, and has subverted the ideal preparation of high-quality graded sand for large-scale production of special mortar.
Structural principle:
LM sand powder vertical mill is mainly composed of grinding roller device, grinding disc device, pressure device, reducer, motor, housing, thin oil lubrication station, hydraulic station and other parts.
Working Principle:
The main motor drives the grinding disc to rotate through the reducer, and the material falls from the discharge port to the center of the grinding disc. Under the action of centrifugal force, the material moves evenly from the center of the grinding disc to the edge. When passing through the crushing roller area on the grinding disc, it is crushed by the grinding roller. Large pieces of material are directly crushed, and fine particles are squeezed to form a material bed for inter-particle crushing. The crushed material continues to move to the edge of the grinding disc until it is thrown out of the grinding disc by the centrifugal force of the grinding disc, falls into the lower cavity of the mill, and is scraped into the discharge port by the scraper installed at the bottom of the grinding disc. The material is sorted in the external sorting or separation equipment, and the large pieces or large particles that exceed the particle size of the finished product are recirculated into the mill for re-crushing until the appropriate particle fineness is reached.
Process flow:
The raw sand and gravel enter the lower hopper, are sent to the bucket elevator by the belt conveyor and enter the silo, and then are sent to the sand powder vertical mill main machine for grinding by the quantitative feeder. The qualified materials that meet the particle size are scraped by the scraper installed at the bottom of the grinding disc into the discharge port and output outside the machine. The external sorting machine selects the fine sand of each interval level and sends it to the finished product warehouse as the finished product. Unqualified large particles re-enter the vertical mill and are crushed again until they reach the appropriate particle size. At the same time, the fine powder is collected by the dust collector and sent to the finished powder warehouse for storage via the screw conveyor and elevator.
Technical advantages:
1. Grading is adjustable and controllable
Establish a quality monitoring system, stable product quality, flexible production, and the grading of finished sand can be adjusted according to actual production needs. For example, 20-40 mesh, 40-70 mesh, 70-140 mesh, 140-200 mesh, etc.
2. Low energy consumption and high output
The whole system has been optimized and designed, and the energy consumption per ton is more than 20% lower than the industry average. It has high production efficiency, with a maximum output of 350 tons per hour, continuous operation, and large-scale production capacity.
3. High sand, low powder, good grain shape
Traditional sand making machines, hammer crushers, rod mills and other equipment have low sand output rates, and LM sand powder vertical mills can produce up to 80% of finished sand. Reasonable grinding curves make the finished sand grains more rounded, with low needle-like content and high product added value.
4. One machine for multiple uses and easy maintenance
It can be used to produce 0-3mm ordinary machine-made sand， 0-1mm ultra-fine special fine aggregates, fine powders above 200 meshes; it has a roller turning device, and the grinding roller can be turned out of the machine, which can be repaired and maintained in a short time.
5. Intelligent environmental protection
Negative pressure closed production, centralized dust collection, and intelligent control system are used to meet the latest national environmental protection requirements.
Customer service:
Pre-sales
Help customers select equipment;
Arrange engineers for free to conduct actual survey and design;
Provide customized product services according to customers' special requirements.
Sales
Strictly implement quality standards and ensure the quality of products shipped.
After-sales
Arrange after-sales service personnel to provide basic equipment guidance;
provide technical guidance such as equipment installation, commissioning and operation;
provide technical training such as equipment maintenance and operation;
professional after-sales team, 24-hour customer response mechanism.
Service guarantee:
Service team: Experienced after-sales service team, providing you with the most professional service
Accessories supply: Adequate accessories reserve to ensure timely supply of accessories
Value-added service: Quality Tour, actively visit customers' sites, understand the use of equipment, and provide customers with on-site technical guidance.
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, 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 the customer's integration needs are met.
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, 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 the customer's integration needs are met.
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