Basalt is a basic volcanic rock, which is an important component of the earth's oceanic crust and the lunar sea. Its chemical composition is similar to diabase, and its general appearance is black, sometimes gray-green or dark purple, with a porphyritic structure. The stomatal structure is compared with the almond structure. universal. Basalt has high durability, many joints and most of the joint surfaces are pentagons or hexagons, which are brittle, so it is not easy to pick large stones. Basalt stone powder can be added to cement or mortar as a building material, or used as roadbed soil for road construction, etc. It is a widely used material.
Basalt grinding process
The basalt grinding process is generally divided into three types: basalt coarse powder processing (0-3MM), fine powder processing (20 mesh-400 mesh), and basalt ultra-fine powder deep processing (400 mesh-3250 mesh).
Stage 1: Broken
The basalt bulk material is crushed by the crusher to the fineness (15mm-50mm) that can enter the mill.
Stage 2: Grinding
The crushed basalt small pieces are sent to the silo by the elevator, and then sent to the grinding chamber of the mill evenly and quantitatively by the vibrating feeder for grinding.
Raymond mill and YGM high pressure mill are generally used for fine powder processing; CLUM ultra-fine vertical mill and HGM ring roller micro-powder mill are generally used for superfine powder processing; European-style coarse powder mill is generally used for coarse powder processing.
Stage 3: Grading
The pulverized material is classified by the powder separator, and the unqualified powder is classified by the powder separator and then returned to the main engine for re-grinding.
Stage 4: Gathering Powder
The powder that meets the fineness enters the dust collector through the pipeline with the airflow for separation and collection, and the collected finished powder is sent to the finished product silo by the conveying device through the discharge port, and then is uniformly packed by a powder tanker or an automatic baler.
Raymond mill is widely used in the grinding and processing of mineral products in the fields of metallurgy, building materials, chemical industry, mining, etc. It is suitable for processing various non-flammable and explosive materials with Mohs hardness below 7 and humidity below 6%. Between 613μm and 44μm, through the joint action of the analyzer and the fan, it can meet the requirements of different users.
The whole machine is a three-dimensional structure, with small footprint and strong systemicity. It can form an independent production system from rough processing of raw materials to transportation to milling and final packaging. The finished powder has uniform fineness and high sieving rate.
The transmission device of the machine adopts a closed gear box and pulley, and the transmission is stable and the operation is reliable. The core components are made of high-performance wear-resistant materials, which have high wear resistance and save costs.
Using a centrally controlled electrical system, the workshop can basically realize unmanned operation. The electromagnetic vibrating feeder is used for feeding, which is continuous and uniform, easy to adjust, saves fuel and electricity, and is easy to maintain.
Working principle of Raymond mill
The whole structure of Raymond mill is composed of main engine, analyzer, pipeline device, blower, finished product cyclone separator, jaw crusher, bucket elevator, electromagnetic vibrating feeder, electric control motor, etc.
Among them, the main engine of Raymond mill is composed of a frame, an air inlet volute, a blade, a grinding roller, a grinding ring, a cover and a motor.
When working, the materials to be pulverized are fed into the machine from the feeding hopper on the side of the machine cover, and rely on the grinding roller device suspended on the plum blossom frame of the main machine to revolve around the vertical axis and rotate itself at the same time. Due to the centrifugal force during rotation, the grinding roller swings outward and presses against the grinding ring, so that the shovel scoops up the material and sends it between the grinding roller and the grinding ring.