This customer introduced a 6R4525 from Fote two years ago. This Raymond mill has worked well since then. After communication, our engineer got to know that more limestone powder is needed these days. Our customer decided to increase the feed to the Raymond mill, which causes an overload and block to the windpipe. The poor exhaust of the pipeline causes the circulating air temperature to rise, so does the main engine. And the current of the main engine rises, while the fan current decreases.
The Solution from Fote engineer:
1) Decrease the feed within the feeding overload of Raymond mill and clean the blocked pipeline;
2) Open the large air duct valve, the temperature of the incoming material is controlled below 6 °C.
Fote engineers often encounter Raymond miller customers who consult them about problems such as less powder discharged and the main grinding body vibration during working. According to past experience, most of these problems are caused by improper operation of technicians. If a Raymond grinding machine has been working for you for many years, its performance will be surely affected.
To know how to maintain Raymond miller, one should first know what is Raymond miller.
Raymond Roller Mill Machine
R-type Raymond mill is a classic and widely used grinding machine. This type of Raymond roller mill is commonly applicable to over 280 kinds of non-combustible and non-explosive materials with Mohs hardness of not more than 9.3 and a humidity of less than 6%, such as barite, calcite, potassium feldspar, talc, marble, limestone, dolomite, fluorite, limestone, activated clay, activated carbon and bentonite, kaolin, cement, phosphate ore, gypsum, heat-insulating material, etc.
These materials can be used as fine powder production additive in the mineral chemical industry, construction,and other industrial fields. The finished product by the R-type Raymond miller machine can be controlled from 80-400 meshes.
Raymond Miller Structure and Working Principle
Raymond Roller Mill Parts
Raymond mill is mainly composed of the main body, blower, analyzer, powder collector, dust collector, pipeline device and motor. The main body refers to the frame, blade, grinding roller, grinding rings, and housing, etc.
Raymond Roller Mill Working Principle
Large block materials are crushed by jaw crusher into smaller particles within the feeding size of Raymond miller. Then the materials are sent into the storage hopper by bucket elevator machine and fed into the main grinding chamber evenly and continuously by vibrating feeder.
The finished product is taken away by the airflow of the fan. Analyzer machine will classify the powder based on set requirements. Qualified fine powder enters the large cyclone collector for separation. Lastly, the collected qualified powder is discharged through the pipe.
The routine repair and maintenance of Raymond mill shall be mainly focused on the wearing parts and the bearing parts. How should the customer extend the life of the Raymond mill through routine maintenance and improve the working efficiency? Here are some suggestions from Fote engineer.