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The main points of choosing mining machinery and equipment manufacturers
Mining equipment mainly refers to the general term for mining, screening, transportation and other special equipment used in various mine production processes such as coal, ferrous metals and non-ferrous metals.
mainly includes:
(1) Excavation equipment is the mechanical equipment in the mineral mining system that directly participates in the excavation of wells and mines, such as perforators, shaft drilling rigs, raise drilling rigs, roadheaders, mining excavators, well sinking machinery, and charging machinery. , mine loading machinery, etc.;
(2) Hoisting equipment, that is, the mechanical equipment for lifting materials in the mining industry, such as mine hoists, sinking winches, dispatching winches, return column winches, raking winches, pneumatic winches, damper winches, etc.;
(3) Crushing and grinding equipment, that is, equipment for crushing and grinding ore, such as crushing machinery, grinding machinery, etc.;
(4) Screening equipment, that is, mechanical equipment that can distinguish different particle sizes when materials pass through the screen surface; such as vibrating screens and other screening machines;
(5) Washing equipment, that is, the mechanical equipment that directly participates in the various technological processes of mineral enrichment, such as classification machinery, gravity separation machinery, flotation machinery, magnetic separation machinery, dewatering machinery, special mineral processing machinery, other mineral processing machinery, etc.;
(6) Other special equipment for mines refers to the special equipment and auxiliary machinery used for underground or open-pit mining.
Among them, crushing and grinding are the key steps before the ore is widely used. Next, we will introduce several common crushing and grinding equipment, hoping to help you.
1. Introduction of crusher and pulverizer
1. Crushing equipment
jaw crusher
As a very typical coarse crushing equipment, the jaw crusher has a very large feeding port and can handle about 1000mm of stone, and most mines are very large when they are first mined, so it often appears in sand factories. middle.
Impact Crusher
Impact crusher is referred to as impact crusher. It is a processing equipment that uses impact energy to crush medium-hard brittle materials. Its discharge particle size is finer than that of jaw crusher. It is often used in combination with jaw crusher in stone production lines for secondary crushing. Operation. When purchasing, please refer to the technical parameters of the impact crusher.
cone crusher
When used for high hardness stone crushing and sand making, cone crusher has many advantages such as low production cost, strong crushing capacity, high crushing efficiency, and good product quality. In the crushing and sand making operations of basalt, diabase, andesite, etc.
2. Grinding equipment
Raymond Mill
Raymond mill is mainly used for barite, calcite, potassium feldspar, limestone, talc, white stone, gypsum and other non-flammable and explosive mineral products, chemicals, building materials with Mohs hardness not greater than 9.3 and humidity below 6% High-fine milling of hundreds of materials such as products, and the particle size of the product can be adjusted arbitrarily within the range of 40-400 mesh. In addition, the price of Raymond mill is relatively cheap, a device with high cost performance.
Ultrafine Pulverizer
The ultra-fine pulverizer is a device that uses the high-speed rotation of the pulverizing blade and the cyclone separation of the air flow to realize the ultra-fine pulverization of dry materials. It is composed of coarse crushing, fine crushing, wind conveying and other devices, and achieves the purpose of crushing in the form of high-speed impact. The pulverizer uses wind energy to form powder at one time, eliminating the traditional screening procedure.
It is a production device that is combined with a manipulator and a conveyor, and combines the functions of slag removal and conveying and loading into one. It adopts an electric full-hydraulic control system. It is an indispensable advanced mining equipment for mining enterprises and a substitute for labor and other machinery.
Environmental conditions for mining backhoe loaders:
1) The slope of the roadway is not more than 15°;
2) The ambient temperature of the roadway is -5℃～+40℃, and the relative humidity is not more than 90% (when the temperature is 25℃);
3) The altitude of the site of use does not exceed 1000m. When using it in a plateau environment with an altitude of more than 1000m, necessary measures or special design should be taken according to the situation;
4) The size of the loaded rock blocks shall not exceed 400mm;
5) The voltage limit deviation is ±5%. AC frequency limit deviation is ±1%;
6) The content of coal dust and methane explosive gas around the loader should meet the safety content stipulated in the coal mine safety regulations.
Features of underground loader:
1. The hydraulic integral torque converter is adopted, which has high reliability and convenient maintenance; the operation is light, fast and flexible, with low fatigue strength and high operating efficiency. Traction; compact structure, high transmission efficiency, large torque reserve, reliable performance, high speed and long service life.
2. The exhaust gas from the engine is filtered through two stages to ensure the health problems of workers working in spaces with poor air circulation.
3. Mining backhoe loaders are mainly used for crushing of phosphate ore, iron ore, copper ore, gold ore, silver ore, lead-zinc ore, coal mine roadway and other mines, hydropower, and tunnel projects with narrow space. Stone and soil material collection and transportation construction loading. It is combined by the manipulator and the conveyor, and the functions of slag removal and conveying and loading are combined into one.
It has the characteristics of safety and environmental protection, low energy consumption and high efficiency. It is an indispensable advanced mining equipment for mining enterprises and a substitute for labor and other machinery.
Downhole loaders have the following features:
1. Adopt articulated frame, small turning radius, flexible and easy to operate in narrow and low sites;
2. The computer-optimized design of the working device has a more reasonable structure, with strong digging force and shorter working cycle time, and higher working efficiency;
3. Adopt hydromechanical transmission. It can make full use of the power of the engine, increase the torque so that the whole machine has a larger traction force, and can adapt to the change of external resistance to automatically and continuously change the speed, which can fully improve the efficiency of the engine and prolong the service life of the transmission parts and the engine;
4. Adopting load sensing, priority steering split and confluence hydraulic system, power shifting and shifting, the whole machine is light and flexible in operation, stable and reliable in action;
5. It adopts low-pressure wide-base construction machinery tires, the rear axle swings, has good off-road and passing performance, and is suitable for driving and working on rough roads;
6. The detachable cab has a wide field of vision, providing the operator with safe and comfortable working conditions.
