Mining Processing Equipment for Slag Powder

Brief Introduction of Mining Processing Equipment For Slag Powder

Slag powder is a new type of high strength and high performance concrete, which is a kind of inorganic mineral material. The principle is the use of blast furnace slag in metallurgical industry, blast furnace slag as concrete mixing material can not only by the same amount of cement, reduce the cost of concrete, and make full use of the blast furnace slag, saving a lot of precious resources cannot be regenerated for the country, is a new type of green environmental protection industry. The core equipment of MLK vertical roller mill is a high efficiency energy saving grinding equipment which is widely used in grinding of blast furnace slag, cement and other building, chemical, ceramics and other industrial raw materials, the technology reached the international advanced level. The process of the slag grinding station I provide the most simple and most convenient operation, process equipment at least, less investment, energy saving, environmental protection, can be mixed with more mixed material and other advantages, can meet the annual output of 30 tons to 1 million 500 thousand tons of slag production line equipment.

1、Main parts of Mining Processing Equipment For Slag Powder
 A. Transmission and ancillary equipment
   Belt conveyor, bucket elevator, etc.
 B. Hot blast stove
   The hot air is heated by the hot blast stove for the vertical mill
 C.MK series vertical roller mill
   Vertical roller mill can efficiently complete the process of material crushing, grinding, drying, powder selecting and pneumatic conveying. Because it is the use of bed principle of grinding, to avoid the collision between the metal and metal abrasion, low wear, low noise, high grinding efficiency, compared with the milling system, grinding power consumption is only 50%~60% of the latter.
 D. system fan
   Provide gas for the entire production line system.
 E. high concentration bag type dust collector
   The bag type dust collector to collect screening of powder product inlet temperature less than 135 DEG C, the dust collection efficiency of 99.99%, compressed air cleaning timing, air leakage coefficient is less than 2%.
 F. finished product storage
   Steel storage material: the construction of Library Characteristics of short construction period, low cost; construction equipment forming, bending line speed up to 5m/min; do not need scaffolding and other ancillary facilities, and short duration; made of thin steel plate, only the equivalent weight of the same capacity of reinforced concrete silos of steel weight, greatly reduces the cost of area; small, easy management and good overall performance, long service life.
 
 2.Main equipment parameters
 1、Annual output of 300 thousand tons

2、Annual output of 400 thousand tons

3.Annual output of 550 thousand tons

4、Annual output of 700 thousand tons

3.Brief introduction of production process
 A, raw material storage and measurement
 According to production needs, combined with the existing plant site, use of existing raw ore belt conveyor, belt conveyor, additional electric three will be delivered to the warehouse of raw ore feed mill. The feed bin is arranged on the bottom of steel belt feeder, grinding raw ore by precise deployment, the belt conveyor sent to the mill entrance.
 B, raw ore grinding
 The original ore grinding system is equipped with a set of vertical grinding system, the maximum moisture content of the original ore can reach 15%~18%, and the finished product moisture is less than 0.5%. The host adopts a vertical slag roller mill, which is equipped with a high concentration pulse jet bag type dust collector to collect the finished products. According to the requirements of the output fineness of the owner, the tilt angle of the blade and the number of blades are improved.
 The measurement of the material by belt conveyor, spiral feeder feed mill in grinding and drying. The screw feeder is prone to wear in the rotating blade, the blade spiral feeder adopts imported wear resistant steel DILLDUR400V material (made in Germany), is 4~5 times the domestic life of ordinary steel plate. It is suggested that the owner should be equipped with two sets of rotating blades, which can be replaced after abrasion.
 Feed mill grinding roller material is squeezed by the rotating disc, was crushed under certain load after grinding material is hot air increases carrying air into high efficiency separator located in the upper part of the vertical mill separated into coarse powder and fine powder; fine powder is finished by the bag type dust collector accept the air conveying chute, bucket elevator and other transportation equipment into the finished product storage; coarse powder falls on the disc again in order to save energy, grinding, grinding hard materials from mill by belt conveyor, hoist equipment back to the mill in grinding, the formation of external circulation system. Because the raw ore is easy to cause rapid wear phenomenon of the mill feed hopper, leaf powder machine and the discharge port in the mill on the hopper and the discharging port internal added by imported wear-resistant steel plate DILLDUR400V material into the liner (replaceable), choose the leaf powder machine adopts the same materials, lining in the hardfacing layer, grinding roll hardness: 62 + 2HRC. Service life: 2000h surfacing a (to maintain the shape of grinding liner) to ensure life is not lower than the reference value of 8000h. Disk lining plate of the hardfacing layer, hardness: 62 + 2HRC. Service life: 2000h surfacing a (to maintain the shape of grinding liner) to ensure life is not lower than the reference value of 10000H.
 The utility model is characterized in that a plurality of iron removing devices arranged in the feed system and the external circulating system of the vertical mill are used for removing the iron particles in the raw material and effectively protecting the grinding machine. According to the characteristics of weak and easy to stick the original ore, the inner wall of the mill body, the inlet and outlet, the outlet pipe of the mill, the shell and the blade of the powder selecting machine are all made of high temperature ceramic wear-resistant coating technology.
 The grinding of the exhaust gas through the cyclone and bag type dust collector by exhaust fan through the chimney into the atmosphere. The internal moisture of material in the mill mill with hot air drying, air leakage coefficient into the atmosphere (air leakage coefficient <5%), to ensure the material moisture <0.5%.
 The coal stove as the main heat source system of drying, the amount of coal per ton of mineral powder is about 12kg~25kg. The use of coal from the coal yard handling forklift factory.
 

C, high concentration bag dust collector
 A high concentration bag dust collector, the inlet temperature is less than 135, the dust collection efficiency of 99.99%, compressed air cleaning timing, air leakage coefficient is less than 2%, acrylic coated bag (Shanghai Berg) 2 years warranty, bag cage service life of 5 years, ready signal, control cabinet response signal, DOS start, stop, failure signal.
 
 D, finished product storage and bulk
 The finished product is stored as a circular concrete silo, and the wall of the cylinder is made of steel plate, and the storage volume is 2.5 5m of the galvanized sheet, Delta, delta 8m, delta 1.8m and 3.5 4m. The products are made of Handan Steel Corp. Reinforcement for channel steel gb. From the original ore grinding plant products through the air conveying chute and bucket elevator into the reservoir.
 The tanker in bulk powder factory, finished in bulk by using 2 sets of reservoir bottom bulk loading capacity of 200t/h system. According to the actual situation can be reserved on the side of the library. The bottom 120t truck, supporting the control of powder loading system.
 The bag dust collector is disposed at the top and the bottom of the bag.

 E, air compressor room
 This project is mainly used for gas equipment for dust collection equipment, gas consumption is about 7Nm3/min, the maximum pressure of 0.7MPa. Considering the leakage and safety, additional safety factor of 20%, the design capacity of air compressor is about 8.5Nm3/min.
 Close to the craft bag dust collector, set the air compressor room, set up 2 8.5Nm3/min screw air compressor (air cooling), the pressure is 0.7MPa, one of the spare, in order to meet the needs of the whole plant production gas.
 Overhead installation of outdoor compressed air pipeline.
 

F, production of circulating water system
 In order to meet the production requirements, and strive to save water and pipe network layout reasonable, circulating cooling water system of production equipment used in this project.
 The system consists of the supply cycle water pump production equipment cooling water in the pump station, the circulating water cooling device using residual pressure back to the cooling tower, after cooled by the cooling tower circulating water tank and gravity flow of production, supply water pump production equipment by circulating cooling water, for recycling.
 
 4, Electrical and automation
 1, electric drive
 (1) motor start and speed regulation
 A winding type motor using liquid rheostat starter. Squirrel cage motor is generally used to start the full voltage, 75kW and above motor using the appropriate form of step-down start. Squirrel cage motor speed regulation, the use of variable frequency speed.
 (2) electrical control mode
 A. main production process using distributed computer control system. In a set operation station central control room, centralized monitoring, operation and management; workshop field control station, the completion of the workshop equipment sequence logic control, machine is provided with a control mode selection switch, can choose centralized, near the machine, disconnect the three control modes.
 When the centralized control, the field station issued in accordance with their respective supervisory computer instructions for each motor at a predetermined time interlock start and stop, the equipment ready, operation and fault state can be displayed in the power room CRT, fault, alarm can be hit by a printer report.
 In the "machine side" control mode, can be opened at the side of the machine, in order to facilitate single test. In the "off" control mode, the focus and the side can not drive, to ensure the safety of maintenance personnel.
 When the fault occurs, the power room and the machine can stop.
 B. motor protection: low voltage motor generally uses automatic air switch for short circuit protection, thermal relay for overload protection, phase failure protector for phase failure protection.
 C. electrical instrument: each control point of the power line with current meter, voltage meter, 30kW motor or load monitoring motor are installed ammeter, motor mounted tachometer.

 2, cable selection and laying mode
 10kV cable is made of XLPE cable, low voltage power cable is made of XLPE cable.
 Cable laying in the workshop by cable channel, cable tray and wearing protective tube combination, the workshop mainly adopts external cable cable bridge, cable trench laying, buried in part by the way.

 3, electric lighting
 (1) in the workshop, the lighting is usually made of wide or deep light.
 (2) fluorescent lamps are used in power room, control room and workshop office.
 (3) each workshop is equipped with lighting distribution box, the important departments and posts with accident lighting, local repair lighting using 36V safety voltage.
 (4) lighting wiring is generally BVV-500 sheathed wire.

 4, lightning protection and grounding
 The buildings or structures above 15m are equipped with lightning protection, earthing adopts a combination of decentralization and centralization of the artificial grounding device, the high-voltage electrical equipment adopts grounding protection, low voltage electrical equipment using zero connection protection.
 

5, production process automation
 According to the requirements of the production process of the automation of the production process, the production process is stable and reliable, for practical purposes, to ensure product quality, energy consumption, improve the level of technology and management methods for the purpose, the factory adopts the advanced computer control system for centralized management, decentralized control of each workshop, the operation station is arranged in the central control room. Complete the monitoring and the operation of the production process through CRT and keyboard, including motor group starting / stopping and emergency parking operation, with a ready, running state of electrical equipment, fault display, process parameter setting, display, alarm, recording and automatic control, fault alarm and various parameters can from the printer to print out the report.
 
 5、Design features
 1 the system has high output and occupies an area;
 2 large scale equipment at the same time, most of the use of open space, saving civil investment;
 3 raw materials transported by belt conveyor, conveyor using airslide, high reliability, low operation cost;
 4 finished product collection using cyclone dust collector dust collection system, the system resistance is small, low concentration of export emissions, fully meet the national environmental standards;
 5 high degree of automation, with a central control system, easy to operate and maintain;
 The wind machine adopts high voltage frequency control system 6, reduce the production power consumption system;
 6.figure at the crime scene.
 7 transport corridors, warehouse and feed ingredients of steel frame, the steel structure, reduce the cost, shorten the construction period.
 

Our Services:
 Pre-sale services: enthusiasm
 We provide you with the process plan, process flow design and manufacturer equipment according to your special demand.
 Sale services: servant
 Send technicians to the job site for guiding the installation and adjustment, training operators and finishing the check and accept together with you.
 After-sale services: faithfulness
 To establish long term friendship, we will regularly pay return visit to customers.
 In addition, we provide one-year warranty to make sure your machine runs consistently. We always keep certain inventory level of spare parts, which means the replacements can be shipped to you right away.