Capacity: 10,000-300,000 t/a
Service Scope: Provide overall plan and equipment for mineral powder line
Process: vertical mill, ball mill process
1.The ball milling system is a traditional slag grinding process. It has strong adaptability to materials, large specific surface area, better particle shape than vertical mills, simple maintenance and cheap accessories. However, it occupies a large area, consumes a lot of power, and needs to dry the materials separately, and the process is complicated.
2.Vertical mill slag grinding is a system that has developed rapidly in recent years. The process is simple. Drying, grinding, and powder selection are all completed in the mill. The investment is low, the unit power consumption is low, and the heat transfer is fast, but the maintenance is more difficult than ball milling.
Ground-granulated blast-furnace slag (GGBS or GGBFS) is obtained by quenching molten iron slag (a by-product of iron and steel-making) from a blast furnace in water or steam, to produce a glassy, granular product that is then dried and ground into a fine powder. Ground granulated slag is often used in concrete in combination with Portland cement as part of a blended cement.
As a new admixture of high-performance concrete, slag powder has the advantages of improving concrete compression, tensile, shear, and bending properties. At present, replacing the amount of cement in concrete and cement products with the same amount of slag powder has become the mainstream trend in the building materials industry. At present, domestic large-scale vertical (ball) mill manufacturers do not produce small and medium-sized equipment, and small vertical (ball) mill manufacturing plants do not have the ability to design and manufacture the entire production line. In order to solve the difficulties of small and medium-sized investment owners in choosing suppliers, we designed and manufactured technical solutions and equipment for the entire mineral powder production line with an annual output of 100,000, 150,000, 200,000, and 300,000 tons.
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ZKRM Specification and technical parameter of Slag Vertical Mill |
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Model |
Capacity (t/h) |
Annual output (10,000 tons/year) |
Grinding disc geometric diameter (mm) |
Grinding disc track diameter(mm) |
Feeding size (mm) |
Slag moisture (%) |
Product specific surface area (m2/kg) |
Product moisture (%) |
Main motor power (kW) |
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ZKRM1500S |
6-8 |
5 |
2180 |
1500 |
<50 |
<12 |
≥420 |
<1 |
280 |
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ZKRM1700S |
10-12 |
8 |
2400 |
1700 |
<50 |
<12 |
≥420 |
<1 |
400 |
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ZKRM1900S |
15-18 |
10 |
2680 |
1900 |
<50 |
<12 |
≥420 |
<1 |
500 |
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ZKRM2200S |
25-28 |
15 |
2900 |
2200 |
<50 |
<12 |
≥420 |
<1 |
800 |
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ZKRM2400S |
35-40 |
20 |
3140 |
2400 |
<50 |
<12 |
≥420 |
<1 |
1250 |
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ZKRM2800S |
45-50 |
30-35 |
3300 |
2800 |
<50 |
<12 |
≥420 | <1 | 1600 |
1. Vertical mill production process
The slag is transported into the factory by truck and stored in the shed. The material is taken by a forklift, measured by a hopper and a quantitative feeder, and then directly sent to the vertical mill by a belt conveyor, and an iron remover is installed on the conveyor to remove iron.
The slag after iron removal enters the vertical grinding mill, and the slag powder after drying and grinding is collected by the bag filter and transported to the finished product warehouse by the air chute and elevator. The spit from the vertical mill is fed into the vertical mill again via the conveyor and elevator. The drying heat source is provided by a hot air stove.
2. Ball mill production process
The slag is transported into the factory by truck and stored in the shed. The material is taken by a forklift, measured by a hopper and a quantitative feeder, and then sent to the dryer by a belt conveyor for drying. The dried slag enters the ball mill for grinding, and the ground slag is discharged from the bucket. The type hoist is sent to the powder concentrator for classification, and the qualified particle size is transported to the finished product warehouse by the air chute and hoist. Large-particle mineral powder is returned to the ball mill for re-grinding. The discharge end of the mill is equipped with a dust collector, and the fine powder collected by the dust collector is transported to the finished product warehouse by the air chute and elevator. The drying heat source is provided by a hot air stove.
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