Hefei Hengcheng Industrial Equipment Technology Co., Ltd
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Low Operating Cost Slag Grinding Plant Vertical Grinding Mill Superfine Vertical Roller Mill
Description
Slag is a by-product of the blast furnace ironmaking process. It is the reaction of impurities such as silica and alumina with lime to form a molten material with silicate and aluminosilicate as the main components. After quenching, it becomes a loose and porous granular material, which is called blast furnace slag. Also referred to as slag;
Slag powder is the abbreviation of granulated blast furnace slag powder from a production point of view; from a physical point of view, ore powder is a granulated slag powder material processed from slag by certain equipment; slag powder is a high-quality concrete As a result, with the continuous increase in the scale of industrial production in my country, the discharge of slag has also increased a lot; based on the industrial application of slag powder, promoting the recycling of slag resources has also opened up its application market;
Selection of slag grinding equipment:
For slag water slag Hefei Hengcheng Technology has launched several slag vertical mills specially designed to manufacture slag powder. Our slag vertical mills continue to introduce advanced grinding technology in the industry, making our mill equipment more scientific, smarter and more efficient. Environmental friendly;
【Production】: 23-220 t/h
【Slag moisture】:<15%
【Product moisture】≤1%
【Specific surface area of mineral powder】≥420㎡/kg
【Application fields】
Coal powder preparation, slag grinding, sand and gravel yard, concrete mixing station, dry mortar, power plant desulfurization, quartz sand, etc.
【Technical advantages】
This mill is the choice for large-scale milling projects, with the advantages of reliable performance, high efficiency and energy saving, environmental protection, convenient maintenance, large unit processing capacity, and high dust collection efficiency.
【Working Principle】
The motor drives the grinding disc to rotate through the reducer, the material falls into the center of the grinding disc from the feed inlet, and the hot air enters the mill from the air inlet. Under the action of centrifugal force, the material moves to the edge of the grinding disc, and is crushed by the grinding roller when it passes through the annular groove on the grinding disc. Re-grinding, when the material in the airflow passes through the dynamic and static separator, under the action of the rotating rotor, the coarse powder falls on the grinding disc for re-grinding, and the qualified fine powder is milled together with the airflow and collected in the powder collecting device, which is product. Moisture-containing materials are dried during contact with hot gas to achieve the required product moisture.
Technical Data
Model | HVM2500 | HVM2800 | HVM3400 | HVM3700 | HVM4200 | HVM4500 | HVM4800 | HVM5100 | HVM5600 |
Grinding Table Median Diameter(mm) | 2500 | 2800 | 3400 | 3700 | 4200 | 4500 | 4800 | 5100 | 5600 |
Capacity(t/h) | 23-26 | 50-60 | 70-83 | 90-110 | 110-140 | 130-150 | 150-180 | 180-200 | 200-220 |
Raw Material Moisture | ＜15% | ||||||||
Product Specific Surface Area | ≥420㎡/kg | ||||||||
Product Moistrue | ≤1% | ||||||||
Main Motor Power(kW) | 900 | 1800 | 2500 | 3350 | 3800 | 4500 | 5300 | 6150 | 6450/6700 |
Illustrate | Re:Mining slag bond index≤25kWh/t,Steel slag bond index≤30kWh/t,The output will decrease by 30%-40% when grinding steel slag micro power | ||||||||
The slag milling process is as follows:
The first stage: drying of raw materials
According to the moisture content of the raw materials and the moisture content requirements of the finished product, the slag uses a dryer to remove moisture for materials with high moisture content. Materials with low moisture content can be treated with hot air through a hot blast stove to the mill. Through the process of grinding and drying, the equipment investment cost and operating energy consumption cost of the dryer can be reduced.
Stage 2: Grinding
The dried slag small pieces of material are sent to the raw material hopper by the elevator, and then sent to the grinding chamber of the mill evenly and quantitatively by the conveying feeder for grinding.
Stage 3: Grading
The pulverized materials are classified by the classification system, and the unqualified powders are classified by the classifier and then returned to the main engine for re-grinding.
Stage 4: Collection of Finished Products
The powder that meets the fineness enters the dust collector through the pipeline with the airflow for separation and collection, and the collected finished powder is sent to the finished product silo by the conveying device through the discharge port, and then loaded into the powder tanker uniformly.