raymond mill

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Equipment for high fine pulverizing and processing of more than 280 kinds of materials in mineral, chemical, construction and other industries

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synonym Raymond Mill (Raymond mill) generally refers to Raymond mill

This machine adopts the advanced structure of similar products at home and abroad, and is updated and improved on the basis of Raymond mill in the same industry Ball mill High efficiency, low power consumption, small floor area and small one-time investment. Grinding roll stay centrifugal force Under the action of Grinding ring Therefore, when the grinding roll and ring wear to a certain thickness, the output and fineness of finished products will not be affected. The replacement cycle of grinding roller and grinding ring is long, thus eliminating Centrifugal mill Shorter replacement cycle of vulnerable parts. The air flow of this machine is Fan — Grinding shell — cyclone separator - There is less dust than that of high-speed centrifugal mill due to circulating flow in the fan, and the operation workshop is clean and the environment is free of pollution.

Chinese name: raymond mill
Foreign name: Raymond mill

Structure: By host, analyzer, fan, etc
Features: The whole machine is of vertical structure, with small floor area

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one Purpose and scope of use
two Main structure
three Raymond mill air separation process

Purpose and scope of use

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Raymond mill is widely applicable to Barite 、 calcite 、 Potash feldspar , talc, marble, limestone, dolomite, fluorspar, lime Activated clay , activated carbon, bentonite, kaolin, cement, phosphate rock, gypsum, glass, thermal insulation materials, etc Mohs hardness High fine milling and processing of more than 280 kinds of non flammable and explosive materials in mineral, chemical, construction and other industries with humidity below 6% and no more than 9.3, R Raymond mill The particle size of the finished product can be adjusted freely within the range of 80-325 meshes, and some materials can reach up to 600 meshes.

Main structure

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The machine structure is mainly composed of host, analyzer, fan and finished product cyclone separator , fine powder cyclone separator and air duct. The host is composed of frame, air inlet volute, blade, grinding roller, grinding ring and housing.

raymond mill working principle:

During operation, the materials to be crushed are fed into the machine from the feed hopper at the side of the housing. The grinding roller device suspended on the plum blossom rack of the main machine rotates around the vertical axis and rotates itself at the same time. Due to the centrifugal force during rotation, the grinding roller swings outward and presses against the grinding ring, enabling the blade to scoop up the materials and send them between the grinding roller and the grinding ring, The purpose of crushing materials is achieved due to the rolling compaction of the grinding roller.

Raymond mill air separation process

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After material grinding, the fan blows the air into the main machine shell to lift the powder, which is sorted by the analyzer placed above the grinding room. The fine and coarse materials fall into the grinding room for regrinding. The fine and coarse materials that meet the specifications enter the cyclone collector with the wind flow, and are collected and discharged through the powder outlet, which is the finished product. The air flow returns to the fan from the return air pipe at the upper end of the large cyclone collector. The air path is circular and flows under negative pressure. The increased air volume of the circulation air path is discharged through the exhaust pipe between the fan and the host, and enters the small cyclone collector for purification.

Model parameters

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The model parameters of Raymond mill are as follows:

model	6R4525	5R4119	4R3216	3R90	3R85	3R75	3R65	3R60
parameter	6R4525	5R4119	4R3216	4R90	4R85	3R75	3R65	3R60
Feed particle size (mm)	≤30	≤25	≤25	≤25	≤20	≤20	≤15	≤15
Grain size of finished product (mm)	0.125- zero point zero four four	0.125- zero point zero four four	0.125- zero point zero four four	0.125- zero point zero four four	0.125- zero point zero four four	0.125- zero point zero four four	0.125- zero point zero four four	0.125- zero point zero four four
Shift production of different material fineness (t)	16-120	8-60	4-45	3-35	2-28	1.5-20	1-18	0.5-8
Central shaft speed (r/min)	eighty-two	one hundred and five	one hundred and thirty	one hundred and sixty	one hundred and sixty	one hundred and sixty	one hundred and eighty	two hundred and eighty
Grinding ring diameter (mm)	one thousand seven hundred and seventy	one thousand and four hundred	one thousand and seventy-three	nine hundred and seventy-three	eight hundred and eighty-five	eight hundred and sixty-five	seven hundred and twenty-five	four hundred and ninety-five
Grinding roll diameter (mm)	four hundred and fifty	four hundred and ten	three hundred and twenty	three hundred	two hundred and seventy	two hundred and sixty	two hundred and ten	one hundred and forty
Grinding roller height (mm)	two hundred and fifty	one hundred and ninety	one hundred and sixty	one hundred and sixty	one hundred and fifty	one hundred and fifty	one hundred and fifty	one hundred
Main engine motor	y315m- 4-132	y280s- 4-75	y225s- 4-37	y225m- 8-30	y225m- 8-22	y225s- 8-18.5	y200L- 8-15	y160m- 6-7.5
Fan motor	y315m- 4-132	y250m- 4-75	y200L- 4-37	y180m- 4-22	y160L- 4-15	y160L- 4-15	y160m- 4-11	y132s- 2-5.5
Analyzer motor	y160m- 4-11	yc200- 4B-7.5	yc120- 4a-5.5	y112m- 6-2.2	y112m- 6-2.2	y112m- 6-202	y112m- 6-2.2	y90L- 6-1.1

Use and maintenance

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1、 raymond mill Before installation, operators must receive necessary technical training to make them understand the principle and performance of Raymond mill and be familiar with the operating procedures of Raymond mill. During the use of Raymond mill, there should be fixed personnel to take care of it, and the operators must have a certain level of technology.

2. In order to make Raymond mill normal, the "equipment maintenance safety operation system" shall be formulated to ensure long-term safe operation of the mill, and necessary maintenance tools, grease and corresponding accessories shall be provided.

3. After Raymond mill has been used for a period of time, it shall be overhauled, and wear parts such as grinding roll, grinding ring, blade, etc. shall be overhauled and replaced. The connecting bolts and nuts of the grinding roll device shall be carefully checked before and after use to see whether there is looseness and whether the lubricating grease is sufficient.

4. When the grinding roll device of Raymond mill has been used for more than 500 hours Rolling bearing It must be cleaned, and the damaged parts shall be replaced in time. Manual refueling pump and grease gun can be used as refueling tools.

5. When the machine is stopped, stop feeding first, and the main machine continues to rotate, so that the residual materials can continue to be ground. After about one minute, the main machine motor can be turned off to stop the grinding work, and then the fan motor and analyzer motor can be stopped.

Performance characteristics

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1. The whole machine is a vertical structure, which occupies a small area and is highly systematic. It can form an independent production system from rough processing of raw materials to transportation to milling and final packaging.

2. Compared with other milling equipment, the screening rate is up to 99%.

3. The transmission device of the main engine adopts sealed gear box and pulley, which ensures stable transmission and reliable operation.

4. The important parts of Raymond Mill are made of high-quality castings and profiles, and the process is fine, ensuring the durability of the whole equipment.

5. The electrical system of Raymond Mill adopts centralized control, and the model selection is advanced, reasonable and highly automated.

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