The main component of limestone is calcium carbonate (CaCO3), which is a type of sedimentary rock. Limestone resources are widely distributed in various provinces and cities in China, with Shaanxi, Anhui and Guangxi as the representatives. Limestone is widely used in cement building materials, industrial fillers, precision casting and environmental protection projects.
Cement: The raw materials for making Portland cement include limestone, clay, gypsum, fine slag powder, etc., among which the proportion of limestone is the largest.
。 Rubber: Natural rubber is soft and has certain hardness through calcium powder filler. Limestone is one of the main raw materials for calcium powder .
Desulfurization: Limestone powder is needed for limestone-gypsum method and boiler calcium spray method.
Sandstone: Building sandstone is also one of the main uses for the development of limestone mines.
Lime: burned lime, Sanqi soil will use quick lime, powdered wall will use slaked lime (calcium hydroxide), lime is limestone after crushing, firing, grinding, lime hydration will become mature lime after exothermic, Quicklime is also used for sterilization.
Putty powder: Lime and calcium powder are used as part of the putty powder.
Water purification and decontamination: Calcium carbonate powder can be used as a water purification material to allow pollutants to settle.
The use of limestone powder and limestone derivatives is much more, and we will not list them one by one!
- Recommended model: YGM series high-pressure mill equipment features: mature technology, high sieving rate, wide application area, high efficiency
- Recommended models: Counterattack crusher equipment Features: Multiple crushing chambers are broken in stages, with high crushing efficiency and good grain shape.
- Recommended equipment: Jaw crusher Features: simple structure, easy to use, suitable for coarse crushing
- Recommended model: Sand making machine Features: outstanding crushing capacity, large output of construction sand, easy maintenance, and both shaping ability.
The raw materials are evenly fed by the feeder to the jaw crusher, and then finely shaped by the impact crusher, and then sent to the vibrating screen for screening. After screening, a small amount of material will be returned, but some can be formed at one time. 0-5mm, 5-10mm, 10-20mm, 20-31.5mm aggregates can be processed. (Each stockyard has different requirements for specifications, which can be adjusted by adjusting the shaker.)
5-31.5mm aggregate can be used to make machine sand. The feed of impact sand maker is generally below 40mm. Therefore, if only machine sand is used, those below 40mm can enter the sand maker to make sand. The output of the sand making machine is still sieved, and sometimes powder selection or washing is needed, and a powder selection machine and a sand washing machine are used.
Make calcium powder or desulfurized limestone powder
After crushing the limestone by the jaw crusher, after reaching the allowable feed particle size (<35mm), a hoist lifts it into the hopper, and then the feeder enters the mill cavity for grinding. After reaching a certain fineness, it is analyzed. After the machine analysis, it enters the powder separator to select the finished product. When the air entering from the mill is exhausted, it is removed by a dust collector. A set of equipment includes jaw crusher, hoist, mill main machine (including main machine, analysis machine, reducer, blower), powder separator, pipeline, silo, feeder, dust collector, etc. It can process 50-425 mesh limestone powder or calcium powder.
If this grinding system is replaced with an ultra-fine mill (feeding below 10mm), fine powders of 500-2500 mesh can be produced. The ultra-fine mill is also called three-ring micro-mill, and its entire system includes hammer breaking. , Hoist, feed bin, ultra-fine grinding host (including grinding room, analysis machine), electromagnetic feeder, induced draft fan, pulse dust blower, pipeline, collector, bagging machine, etc. Nowadays, the use of ultrafine powder is becoming more and more extensive, and more and more enterprises are making ultrafine calcium powder.
The milling equipment used for making lime is the same as that for making limestone powder. The difference is that the limestone used in the mine is fired in a rotary kiln or vertical kiln.
Processing use: Desulfurized limestone powder
Target hourly output: 10t / h
Recommended models: YGM4528
Processing use: building powder
Target hourly output: 4t / h
Recommended models: YGM9518
Processing use: 13 crushed stone
Target hourly output: 1000t / h
Recommended models: PE1000 * 1200 jaw crusher, PF1315 impact crusher
Processing use: sand making
Target hourly output: 200t / h
Recommended models: 1315 counterattack, 5120 sand making machine