Medium frequency furnace lining materials can be divided into many kinds in industrial production. According to the different nature of the material, Medium frequency furnace material can be divided into neutral ramming mass, acid ramming mass and alkaline furnace material. There are various kinds of medium frequency furnace materials. According to the difference of acidity and alkalinity, it can be divided into neutral charge, alkaline charge and acidic charge. Among them, there are different kinds of medium frequency furnace ramming mass with different properties. There are many steps in the whole process of lining material (pounding material), among which knotting is some important process. The tying process also affects the service life of the furnace. The following describes the types of furnace lining materials and the precautions to be taken in the tying process:
Considerations for Furnace Lining Materials in the Knotting Process
1.Standardize the standard operating procedures, but there are many precautions in the process of ramming material bundling.
For example, before tying the knot, the power supply and water supply system should also be prepared in advance through the staff of each project. Of course, workers are not allowed to bring flammable and explosive substances into the work site, including cell phones, keys and other items.
2.Adding sand during the process of adding furnace lining materials is a relatively strict process. For example, sand needs to be added once and multiple additions are prohibited. Of course, when adding sand, the sand should be placed flat on the bottom of the furnace, can not be stacked in piles, otherwise it will cause the separation of sand grain size.
3. Furnace lining materials special tips: shaking and then vibrating when knotting. We should pay attention to the manipulation. In the operation process, we should be light first and then heavy. The rocker should also be inserted into the bottom at one time, and each time the rocker is inserted, it should be shaken eight to ten times.
4. After the bottom of the furnace is completed, it needs to be able to be placed smoothly into the dry pan. In this way, it can form a standard ring triangle. Of course, there are many steps to pay attention to in the whole knotting process.
Medium Frequency Furnace Lining Material Types
Medium frequency furnace charge is also known as medium frequency furnace lining material, medium frequency furnace dry vibration material, medium frequency furnace dry pounding material, medium frequency furnace pounding material, etc. Those who know it may already know that, according to the PH value, they are usually divided into three types: acidic furnace lining material, alkaline furnace lining material and neutral ramm mass.
1.Acidic ramming mass with high purity quartz and fused silica as the main raw material, composite additives for the sintering agent;
2.Neutral ramming mass is mainly made of alumina and high alumina materials, sintering agent using composite additives.
3.Alkaline medium frequency furnace charge using high-purity fused corundum, high-purity fused magnesia and high-purity spinel as the main refractory raw material, composite additives for the sintering agent.
Acid, neutral and alkaline induction furnace materials are widely used in coreless induction furnace and core induction furnace. As the lining material of intermediate frequency furnace, it is used for melting gray cast iron, ductile cast iron and cast iron alloy, carbon steel, alloy steel, high manganese steel, tool steel, heat-resistant steel, stainless steel, aluminum and its alloys, copper alloys such as purple copper, brass, white copper and bronze.
What are the main material differences between acid, neutral and alkaline furnace lining materials?
Acid furnace lining materials: tetravalent compounds SiO2, ZrO2, etc., siliceous, semi-siliceous, clayey, zirconium, semi-zirconium.
Neutral furnace lining materials: trivalent compounds Al2O3, Cr2O3 and strong covalent bonding crystalline minerals C, SiC, high alumina, corundum, chromium, carbon, silicon carbide, silicon nitride, etc.
Alkaline furnace lining materials: divalent compounds CaO, MgO, magnesium, dolomite, magnesium-aluminum, magnesium-chromium.