High-pressure GRINDING roller mill
Description: Shanghai Kinglink Industry Co., Ltd. has established a large roller press production base with an annual output of more than 200 sets of various roller presses and high-pressure roller mills, which are widely used in cement, metallurgy, mining and other industries. All grinding systems, including roller press, disintegrator, ball mill, powder concentrator, are suitable for new plant construction and old plant reconstruction. It has the characteristics of high automation, low investment, reasonable process layout, small land occupation, convenient layout, low operation cost, convenient maintenance, etc. The system applies the principle of high-pressure material layer grinding and adopts the working mode of unit crushing and group grinding. After high-pressure extrusion, the particle size of brittle materials decreases. The content of fine powder less than 0.08mm reaches 20-30%, and that of materials less than 2mm reaches more than 70%. There are a lot of cracks in all extruded materials. When the materials enter the next grinding process, the energy consumption is greatly reduced and grinding is carried out The system can increase production by 50-100% and reduce unit wear by 30-50%.
Main features
1. Roll surface technology (welding materials, equipment and welding process) the roll surface adopts hot surfacing, and the maintenance of wear-resistant layer is more convenient. It can effectively reduce the generation and diffusion of microcracks in the welding process. The hardened layer has high hardness (> hrc58) and high toughness. The service life of the roll surface is more than 8000h, and the routine maintenance is simple. 2. The hydraulic system of roller press is very reliable by using the aviation hydraulic technology. 3. The hydraulic system of the roller press and the complete automatic control system can cooperate with each other to realize: the load control of the main drive motor of the roller press; the deviation control and automatic correction of the left and right clearance of the two rollers; the fault self diagnosis technology. 4. The matching powder concentrator has the characteristics of low operation cost and high operation rate. 5. The matching automatic control system adopts the fuzzy control principle, matching with the components of world-famous suppliers.
Design and configuration
The press roll of wear-resistant liner PFG has a layer of wear-resistant liner which has been overlaid. This wear-resistant liner can be used for overlaying the solid shaft or the hot press fit bushing. The worn surface can be restored by hardfacing. If necessary, the repair of the damaged point or the surfacing of the whole surface can be carried out without moving the roller. In order to facilitate the formation of extrusion cake, HRP roller press has an electric feeding control door, which can make feeding start smoothly and help to adjust the output or energy consumption of roller press. When dealing with various types of materials, it is beneficial to set up the feeding control door, but it is necessary to form the material cake. The roller press can be configured to form the grinding system in the following ways: as a pre grinding machine, the roller press can grind the new feed, and the ground material then enters the grinding circuit of the ball mill. As a semi final grinding equipment, PFG roller press operates in a closed circuit together with the disperser and the dynamic powder concentrator. Fine materials are finally ground in a single chamber ball mill. In this configuration, PFG roller press can be arranged more compact and efficient by using two-stage powder concentrator and ball mill to work together. For some types of feed and some final products, PFG roller press can be used as the final grinding system without ball mill. PFG roller press and two-stage powder concentrator are operated in closed circuit. This configuration can make the operation and investment cost lower.
Technical
| Cement combined grinding system |
| Ball mill type |
Roller press type |
Classifier type |
Power consumption |
| Φ3.2*13m |
KLG120-45
KLG120-50 |
Break up classifier |
65-110 |
| KLG150-80 PFG150-100 |
Air classifier |
| Φ3.8*13m |
KLG140-65
KGL140-80 |
Break up classifier |
102-160 |
KLG150-100
KLG160-120 |
Air classifier |
| KLG160-140 |
Rotor air classifier |
| Φ4.2*13m |
PFG160-140
KLG150-100 |
Break up classifier |
135-220 |
KLG160-120
KLG160-140 |
Air classifier |
| KLG180-160 |
Rotor air classifier |
| Φ4.5*14.5m |
KLG180-160 |
Air classifier |
180-240 |
| KLG200-180 |
Break up classifier |
230-270 |
| Φ5.0*15m |
KLG200-180 |
Air classifier |
290-320 |
Technical
| Type |
KLG 200-180 |
KLG 180-160 |
KLG 180-120 |
KLG 170-100 |
KLG 160-140 |
KLG 150-100 |
KLG 140-120 |
KLG 140-80 |
KLG 140-70 |
KLG 140-65 |
KLG 120-60 |
KLG 120-50 |
| Roll diameter |
Φ2000 |
Φ1800 |
Φ1800 |
Φ1700 |
Φ1600 |
Φ1500 |
Φ1400 |
Φ1400 |
Φ1400 |
Φ1400 |
Φ1200 |
Φ1200 |
| Roll width |
1800 |
1600 |
1200 |
1000 |
1400 |
1000 |
1200 |
850 |
700 |
650 |
600 |
500 |
| Linear speed of roll surface(M / s) |
1.83 |
1.74 |
1.75 |
1.47 |
1.47 |
1.50 |
1.52 |
1.46 |
1.48 |
1.48 |
1.47 |
1.47 |
| Normal working roll gap (mm) |
25-50 |
25-45 |
24-45 |
25-45 |
25-45 |
22-40 |
18-35 |
18-35 |
18-35 |
18-35 |
16-30 |
16-30 |
| Maximum feed size (mm) |
65 |
65 |
65 |
60 |
60 |
60 |
60 |
60 |
60 |
60 |
55 |
55 |
| Maximum feeding temperature (ºC) |
≤130 |
≤130 |
≤130 |
≤130 |
≤130 |
≤130 |
≤130 |
≤130 |
≤130 |
≤130 |
≤130 |
≤130 |
| Pre-grinding ability |
clinker(t/h) |
1000-1250 |
920-1120 |
650-750 |
480-620 |
600-720 |
460-500 |
460-530 |
300-350 |
240-334 |
240-300 |
110-165 |
115-170 |
| Raw material(t/h) |
1050-1280 |
920-1150 |
700-820 |
500-650 |
650-760 |
480-520 |
485-550 |
320-390 |
280-360 |
260-320 |
175-220 |
130-195 |
| Main motor |
type |
YRKK7104-4 |
YR6302-4 |
YR560-4 |
YR5004-4 |
YRKK630-6 |
YR5002-4 |
YR500-4 |
YR560-6 |
YR5001-8 |
YR5001-8 |
Y355L-6 |
Y315L-6 |
| power (kw) |
2000×2 |
1600×2 |
1250×2 |
900×2 |
1120×2 |
710×2 |
800×2 |
560×2 |
500×2 |
500×2 |
280×2 |
250×2 |
| Rotation speed(r/min) |
1000 |
1490 |
1480 |
1485 |
993 |
1485 |
1485 |
1485 |
740 |
740 |
960 |
960 |
| voltage(v) |
~10000 |
~10000 |
~10000 |
~10000 |
~10000 |
~10000 |
~10000 |
~10000 |
~600 |
~600 |
~380 |
~380 |
| Type of main reducer |
GYM23PZN |
GYM2292N |
GYM18PZN |
RPG29 |
GYM18P2N |
RPG26 |
RPG28 |
PRG23 |
XGL48 |
XGL48 |
XGM38 |
XGL38 |
| Total weight(t) |
290 |
250 |
250 |
208 |
212 |
178 |
176 |
125 |
120 |
115 |
68 |
64 |
HIGH PRESSURE ROLLER MILL
Description: Roller press grinding technology has rapidly expanded from the cement industry to the mining industry, and the market demand space for roller press in the mining industry is worth looking forward to. In the field of mining, roller press can replace cone crusher or ball mill, mainly used in pre grinding of iron ore and non-ferrous metal beneficiation, and has obvious advantages of energy saving and efficiency.
Description of roller press
Roller press is the pre grinding equipment of grinding system in the fields of cement and mine. It has the advantages of reducing power consumption, increasing output, saving investment and simple operation and maintenance. Its advantages of energy saving, environmental protection and convenient development towards large-scale are unanimously recognized by the industry. With the implementation of national energy conservation and emission reduction policies, roller press is widely used in cement industry, especially in the field of mining. The roller press adopts the roller press based on the material layer grinding technology in the grinding system and the matching powder concentrator which integrates breaking, grading and drying. It can cooperate with the ball mill or form a self-contained system to form a variety of technological processes, such as pre grinding, mixed grinding, semi-final grinding and final grinding systems. Due to the change of grinding mechanism, "Pengfei" roller press and its system technology can reduce the power consumption of grinding system by 20-50% and increase the output by 30-70%.
Application
In the field of mining, roller press is mainly used to replace cone crusher for fine crushing or ball mill for coarse crushing. Due to the high technical content of the roller press in the mine, the enterprise needs to have strong independent R & D and innovation ability. Pengfei group is committed to providing the best solution of grinding system for cement, mining and other fields, "Pengfei" roller press grinding technology has rapidly expanded from the cement industry to the mining field, making a breakthrough growth in the application of the mining industry.
Technical characteristics
Wear resistance of roller surface material is the key factor to determine the application of roller press. With the continuous breakthrough of wear resistance of roller surface material, roller press is gradually expanding from the field of cement grinding to the field of various metal ore grinding. In the field of cement clinker grinding, the proportion of roller press application is about 20%. In the field of mine grinding, the roller press application is just in its infancy. The ore grinding of nearly ten thousand metal mines and metallurgical enterprises in China is the key demand of roller press sales for a long time in the future, and the high-pressure roller mill will be widely used in the mine field. Roller press has obvious advantages in energy saving, consumption reduction and efficiency improvement, which is superior to the traditional production process. Compared with the traditional crusher, the roller press can save 20% - 50% of the power, with obvious energy-saving effect; increase the output by 30% - 70%, improve the production efficiency of the system; save the civil engineering investment, facilitate the transformation of the original grinding system, and facilitate the development of the enterprise to the large-scale direction.
Advantages of high pressure roller mill
Flexible configuration: the process system has flexible configuration and strong adaptability. Large crushing ratio: iron ore ≤ 60mm can be crushed to ≤ 3mm. Roll surface wear resistance: high hardness, strong wear resistance and long service life. Large processing capacity: the single processing capacity of high-pressure roller mill reaches 50-2500t / h. Environmental protection and high efficiency: the equipment has low noise, less dust pollution, stable roller operation, and effective utilization rate of more than 95%. Saving power consumption: the ultra-fine crushing process of high-pressure roller mill replaces the traditional crushing grinding process, reducing the total power consumption by more than 50%. Reduction of steel consumption: the ultra-fine crushing process of high pressure roller mill replaces the traditional crushing grinding process, and the total steel consumption is reduced by more than 40%. Wide application: the high-pressure roller mill based on the principle of bed grinding is an ideal equipment for energy saving and consumption reduction, which is conducive to the development of large-scale, high-efficiency, energy-saving and automation of beneficiation technology, and has become the main equipment of ore grinding and grinding system.
Characteristic contrast
Compared with the traditional process, the ultra-fine crushing of ore can greatly save the power and steel consumption. The crushing ratio is large, the single unit processing capacity is large, the product particle size distribution is wider, and the fine powder is more. It can effectively improve the recovery rate of extremely poor iron ore and the quality of iron coarse powder. The dynamic rotation rate is high, the operation cost is low, and the production cost is obviously reduced. Compared with the wet mill, the unit power consumption is greatly reduced and greatly increased Adding the specific surface area of iron concentrate, effectively improving the fineness and pelletizing quality of iron concentrate, significantly improving the production capacity, high operation rate, low operation cost, significantly reducing production costs, metal ore dissociation, selective grinding, bed grinding technology to try to squeeze lean ore, greatly improving the recovery rate, a large number of microcracks to promote the entry of leaching liquid and mineral dissociation, which is conducive to gravity separation or flotation Pre dissociation target minerals.
Manufacturing standards and technical requirements
1. The roller press must be manufactured in strict accordance with the design drawing requirements of Jiangsu Pengfei Group Co., Ltd.
2. The main body of the roller is 42CrMo forged steel, processed and tempered. The normal service life of the roller surface is more than 8000 hours.
3. Frame structure (description) the main frame is composed of upper and lower cross frames and left and right columns. The main frame is made of 16Mn steel plate, which is connected by high-strength bolt group with bearing pin and tightening.
4. The main frame shall be annealed as a whole after welding.
5. In order to ensure the safe and stable operation of the roller press, low wear rate of the roller surface, good extrusion effect, and strictly prevent the entry of foreign matters such as iron block, etc., it is a problem to be fully considered in the process design.
6. The roller bearing is equipped with thermocouple to monitor the working temperature of the bearing.
7. The main shaft of the roller is tempered and inspected by ultrasonic flaw detection.
8. Wear resistant alloy layer, hardness not less than hrc58.
9. The roller press shall be evenly painted with the same color, without flowing, and the parts and components shall be free of casting, welding and other processing defects.
10. The main components of roller press control cabinet are ABB or Siemens products.
11. Comply with heavy machinery related industry standards.
Quality assurance and after-sales service
1. Three guarantees shall be implemented according to the national regulations. In case of any problem, the Seller shall arrive at the site within one day after receiving the buyer's notice for handling. Any damage to parts caused by quality defects shall be compensated free of charge, except for accidents caused by abnormal operation.
2. Service life of roll surface: meet the requirements of raw materials and free of metal impurities. The normal service life of roll surface is more than 8000 hours.
3. During the installation and test run of the equipment delivered to the site, the Seller shall send personnel to guide the installation and debugging until it reaches the standard, and the time shall not be less than 15 days.
4. Provide high quality spare parts at preferential price for a long time.
\Note: All technical data are subjected to our final confirmation.
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Main features
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