INTRODUCTION OF PRODUCT                                                                                                                                                                                                                        

Calcium oxide is an inorganic compound whose chemical formula is CaO, commonly known as quicklime. The physical property is a white powder on the surface, the impure ones are off-white, and the impurity is pale yellow or gray, and it is hygroscopic. The host can be selected according to the output and fineness requirements.

1. It can be used as a filler, for example: used as a filler for epoxy adhesives;

2. Used as an analytical reagent, as a carbon dioxide absorbent during gas analysis, as a spectrum analysis reagent, high-purity reagents are used in the epitaxy and diffusion process in semiconductor production, the drying of laboratory ammonia and alcohol dehydration, etc.

3. As raw materials, it can be used to produce calcium carbide, soda ash, bleaching powder, etc., and also used in leather making, waste water purification, calcium hydroxide and various calcium compounds;

4. It can be used as building materials, metallurgical fluxes, cement accelerators, and fluxes for phosphors;

5. Used as vegetable oil decolorizer, drug carrier, soil conditioner and calcium fertilizer;

6. It can also be used for refractory materials and desiccants [1];

7. It can be used to prepare agricultural machinery No. 1 and No. 2 glues and underwater epoxy adhesives, and also used as a reactant for pre-reaction with 2402 resin;

8. Used for acid wastewater treatment and sludge conditioning;

9. It can also be used as a boiler shutdown protective agent, using the moisture absorption capacity of lime to keep the metal surface of the boiler water vapor system dry to prevent corrosion. It is suitable for long-term shutdown protection of low-pressure, medium-pressure, and small-capacity drum boilers;

10. It can react with water to prepare calcium hydroxide. The reaction equation is: CaO+H₂O=Ca(OH)₂, which is a compound reaction.

POWDERY QUALITY CALCIUM OXIDE GRINDING MILL is a technical update based on the R-type mill. The technical indicators of this product have been greatly improved compared with the R-type mill. It is a new type of high-efficiency and energy-saving mill product. The fineness of the finished product can be adjusted arbitrarily between 22-180μm (80-600 mesh). This product is an updated product of the R-type mill. Among them, the HC1700 large vertical pendulum mill is a large Raymond mill that has been successfully developed early in China. Its output is about 2.5 to 4 times higher than that of similar 5R equipment. It effectively increases the unit output of a single device and reduces the unit. Output and energy consumption are ideal for large-scale milling projects.

Finished product size: 22-180μm

Production capacity: 1-25t/h

ADVANTAGES AND FEATURES                                                                                                                                                                                                                       

New technology, spider-arm and pendulum grinding system. The machine has very small vibration, low noise, stable mechanical  operation and reliable performance.		The processing capacity of materials is larger and the efficiency is  higher. Under the condition that the total power of the R-type mill is  unchanged, the output is increased by more than 40% year-on-year, and the unit power consumption cost is saved by more than 30%.
The remaining air outlet of the mill is equipped with a pulse dust  collector, and its dust collection efficiency reaches 99.9%. All the  positive pressure parts of the main machine are sealed, and a  dust-free processing workshop is basically realized.		Adopting a new sealing structure design, the grinding roller device  can be filled with grease once in 300-500 hours. In addition, there is no need to remove the grinding roller device to replace the grinding  ring, which is more convenient for maintenance.

MILL STRUCTURE & WORKING PRINCIPLE                                                                                                                                                                                                   

HC quality calcium oxide mill consists of base, center shaft support, grinding ring, spider-arm, roller assembly, center shaft, lifter support, lifter support base, housing and other structures.

WORKING PRINCIPLE

Material is broken by jaw crusher firstly into required size, which are carried by bucket elevator up to storage hopper, again by feeder quantitative into host cavity for grinding, host cavity support in the plum flower rack roller device rotation around the center axis, roller under the action of centrifugal force, horizontal swing outward, so that the roller compaction of ring, roller grinding roller rotation around at the same time.

CALCIUM OXIDE  POWDER PRODUCTION PROCESS                                                                                                                                                                                   

1. Crushing of raw materials

The large pieces of calcium oxide are crushed by the crusher to the fineness (15mm-50mm) that can enter the mill.

2. Grinding

The crushed small pieces of calcium oxide are sent to the storage hopper by the elevator, and then sent to the grinding chamber of the mill evenly and quantitatively by the feeder for grinding.

3. Classification

The ground material is classified by the classification system, and the unqualified powder is classified by the classifier and returned to the main engine for re-grinding.

4. The collection of finished products

The powder that meets the fineness is separated and collected in the dust collector through the pipeline through the airflow. The collected finished powder is sent to the finished product silo through the discharge port by the conveying device, and then is packaged by a powder tanker or an automatic baler.

TECHNICAL DATA                                                                                                                                                                                                                                              

Note:

1. The Models above are equiped with newly designed spider-arm structure.

2. The capacity is for limestone powder, and specification is just a reference. The actual production depends on these materials being processed.

SUCCESSFUL CASES                                                                                                                                                                                                                                       

   Shanxi Coal & Chemical Group Calcium Oxide Project

   Processing material: Calcium Oxide

   Fineness: 250 mesh D90

   Output: 8t/h

   Equipment configuration: 1 HC1500

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