What is the key to the technical practice of wear-resistant ceramics for dry magnetic separators in mines?
Mine dry magnetic separator drum uses alumina wear-resistant ceramic sheet to prevent wear is the first new wear-resistant material technology in China. Due to the wear-resistant and non-magnetic characteristics of wear-resistant ceramic sheets, it has unparalleled superior properties of other metal and non-metal materials, and can replace austenitic stainless steel, wear-resistant rubber, wear-resistant non-metallic coatings, etc. Used in iron ore mining equipment, especially on the magnetic separator barrel, the service life can be increased by more than 5 times than the wear-resistant rubber, and the cost performance is more than doubled.
The key to the use of alumina wear-resistant ceramic sheet anti-wear technology for mine magnetic separator drum is the choice of adhesive M used. Due to the special requirements of working conditions, the adhesive M must have the following characteristics.
1. The magnetic separator drum is made of stainless steel, and usually the adhesion of the adhesive M to the stainless steel is relatively poor. Because of the special requirements of the working conditions, the adhesive N must have a strong adhesion to the stainless steel. The general ceramic glue on the market tends to focus only on improving the shear resistance of the adhesive M and neglecting the impact resistance. Under the continuous scouring of the material, the stress fatigue of the adhesive M causes the ceramic sheet to fall off, and the service life of the drum is greatly shortened.
2. Magnetic separator beneficiation is divided into dry selection and wet selection. The dry selection temperature is usually 10 degrees, and the maximum is not more than 15 degrees. Therefore, it is required to be glued.
150 degree high temperature. Wet selection usually works at normal temperature, but it requires adhesive M to have excellent water resistance.
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Sequence Valve is different from a Relief Valve in that the spring chamber is vented directly to atmosphere instead of to the outlet port on the valve. This allows full pressure to appear on both cylinders when they stall, instead of the pressure having to divide between them.
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