Bone porcelain blank 08

Crushing grinding bone porcelain raw materials: the purpose of the first is to reduce bone porcelain the granularity of raw material, in order to cooperate with plastic raw materials into various grey mud: secondly, the shattering of the raw materials can also ACTS as mixed evenly. Desert bone porcelain raw materials such as quartz, feldspar, porcelain stone after grinding degree, should according to the requirement of the bone China products shall be an appropriate choice, because the bone porcelain blank, there is a big difference to the quality of the finished product the particle size, it can directly affect the bone after drying and firing of porcelain products. Than the smaller particle size, particle area, the greater the inevitably play a role in the process of firing area is larger, is advantageous to the various physical and chemical process, and easy to burn and compact structure, reduce the porosity of bone porcelain body, increase the strength of the bone porcelain body after firing, hardness and density. But, if the particles through small, can reduce the refractoriness of bone porcelain body, increase the bone porcelain body shrinkage rate, increase energy consumption. So, not too much to the requirement of granularity, also cannot too small, should be based on the addition of clay content, the nature of the products, raw materials such as reasonable choice. In general, for the production of fine bone China products, especially when used as bone porcelain glaze raw material, its granularity requires smaller, for example, in the case of fritted glaze, general requirements fineness reached about 80% under 10 m particles. Ceramic raw materials of mechanical crushing, generally speaking, there are the following (the difference between 1) Crush stick on mechanical saw type crushing machine, machine ( Applicable to the moisture content of more than 10% of soil material) , powder machine - Is suitable for the moisture content of less than 10% of the soil material) With wheel mill equipped with the bottom of the screen ( Apply to contain large calcareous inclusions or pebble clay. ( 2) Crushed stone machinery such as machinery and raw material crushing bone porcelain material requirements, can be divided into three categories. Category for the coarse crushing machinery & ndash; — Jaw crusher, partial spinning mill, rolling mill, such as cone crusher in the category of broken machinery & ndash; Crusher, dry plate wheel mill, wet disc wheel mill, hammer crusher and other types of finely machinery & ndash; — This category mainly for all kinds of ball mill. Also has use of Raymond mill but Raymond mill production of raw materials, after the particle shape on the forming of the green mechanical strength, strong plasticity of the clay is less than a ball mill and finely and iron impurity is more, bone China, Bone China) Try not to use Raymond machining raw materials, such as using multiple strong magnetic iron. In addition to the frame in the porcelain body, iron, cobalt, nickel, copper oxides is likely to cause bone porcelain body color or dirty point of impurities, especially bone China ( Bone China) , its white porcelain, any tiny dots seem so dazzling, so in the process of bone porcelain system for billet, iron is a very important process. Bone China iron impurity in the raw materials can be classified into metallic iron, iron oxide and iron ore. These mainly comes from run of mine ore of iron impurities or from bone porcelain raw materials in the process of machining mechanical wear and midway mix character. Bone China most during mineral processing raw materials of iron mineral dressing or elutriation method is used to eliminate, but this is just the coarser bone China material, effectively for powder, sexual ferric iron remover is used for separation. According to the size of the magnetic field intensity, can be divided into the following four categories (1) strong unit magnetic susceptibility & gt; 3× 8 - 3, such as metallic iron, magnetite, etc. Bone China (2) the magnetic unit of magnetic susceptibility (for 3 ~ 30) × 8 - 4, such as black iron ore and hematite. Bone China (3) weak magnetic unit of magnetic susceptibility (for 2. 5 ~ 30) × 8 - 5, such as jie iron ore, iron ore. Bone China (4) unit non magnetic susceptibility & lt; 2. 5× 8 - 5 such as pyrite. Bone China magnetic separator can only remove the strong magnetic minerals, weak magnetic and non-magnetic minerals cannot be removed.