Requirements for the selection of boron containing raw materials in the production of glass ceramics

1 A method for producing formed sintered glass or sintered glass ceramic bodies used as high-strength building materials and decorative materials, which are similar to natural stone and can be used for interior and exterior façade, wall and floor cladding, consisting of a mixture of cullet containing 85-98 by weight, mineral components of 0-14-7 and fine additives totaling 0 3-5, the method comprises the following processing steps —A mixture of flat, uniform thick layers is introduced into a heat-resistant mold —60-100 in a mold Drying at a temperature of at least 0 5 – 3 0 k min - heating the layer to the sintering temperature – maintaining this temperature for at least 20 minutes – cooling the layer to room temperature at a rate of at least 0 5 – 3 0 k min is characterized by the addition of sintering additives to the mixture in the form of a solution of metal tetrachloride, metal chloride oxide, metal alkoxide or their hydrolysate.

What are the requirements for sodium in production?

There are basically no requirements, and the effect of cations on the reagent is almost negligible.

What are the requirements for purity?

Depending on what you are used for, 90% for industry and more than 39% for handicrafts.

What else are the requirements?

There are no special requirements.

What are the competitive advantages of sodium octaborate tetrahydrate and boric acid borax pentahydrate?

Sodium octaborate tetrahydrate is obviously better than the latter two, with high purity and high boron content.

Boric acid shrinks easily.

The purity of borax pentahydrate is too low!!

If you don't understand, ask questions.

Cement: limestone and clay.

Ceramic: Clay.

Glass: limestone, soda ash, quartz sand.

The production process of cement uses limestone and clay as the main raw materials, which are crushed, batched and ground to make raw meal, fed into the cement kiln to calcine the mature material, and add an appropriate amount of gypsum (sometimes mixed with mixed materials or admixtures) to grind finely.

Ceramics are materials and various products made of clay as the main raw material and various natural minerals through crushing, mixing, molding and calcination. A general term for pottery and porcelain. The traditional concept of ceramics refers to all artificial industrial products that use inorganic non-metallic minerals such as clay as raw materials.

It includes a variety of products made from clay or mixtures containing clay through mixing, forming, and calcination. It ranges from the coarsest earthenware to the finest fine pottery and porcelain. The main raw material for it is silicate minerals taken from nature (such as clay, quartz, etc.), so it belongs to the category of "silicate industry" with glass, cement, enamel, refractory and other industries.

Glass glass: a relatively transparent solid substance, which forms a continuous network structure when melted, and gradually increases in viscosity and hardens without crystallization during cooling. The composition of chemical oxides (Na2O·CAO·6SiO2) of ordinary glass, the main ingredient is silica, which belongs to the mixture.

Cement is mainly silicate, metal oxide, and gypsum.

Cement: powdered hydraulic inorganic cementitious material. After adding water and stirring into a slurry, it can be hardened in air or better hardened in water, and can firmly cement sand, stone and other materials together.

The word cement is derived from the Latin word caementum, which means crushed stone and flake. The mixture of early lime and volcanic ash is similar to modern lime pozzolana cement [1], and the concrete made from cemented crushed stone is not only strong when hardened, but also resistant to fresh or salt water. For a long time, as an important cementitious material, it has been widely used in civil construction, water conservancy, national defense and other projects.

The main components of ceramics are silicon dioxide, alumina, potassium oxide, sodium oxide, calcium oxide, magnesium oxide, iron oxide, titanium oxide, etc.

Vessels fired with clay are called pottery, and utensils fired with porcelain clay are called porcelain. Ceramics is a general term for pottery, stoneware and porcelain. All utensils made of clay with two different properties of clay and porcelain clay as raw materials, through batching, molding, drying, roasting and other processes can be called ceramics.

The main components of glass are also silica, calcium silicate, sodium silicate, etc.

Glass is formed by melting sand and other chemicals together (the main raw materials are: soda ash, limestone, quartz). It is a silicate non-metallic material that forms a continuous network structure during melting, and the viscosity gradually increases and hardens during the cooling process, resulting in its crystallization.

The chemical composition of ordinary glass is Na2O·CaO·6SiO2, and the main component is silicon dioxide, which is an amorphous solid with an irregular structure. It is widely used in buildings to insulate wind and light, which is a mixture. In addition, there are colored glasses that are mixed with oxides or salts of certain metals to show color, and tempered glass that is prepared by special methods.

Transparent plastics, such as polymethyl methacrylate, are sometimes referred to as plexiglass.

The raw materials of these two items are not powdered, ceramics are made of mud, and glass is made of quartz sand, limestone, feldspar, soda ash, boric acid and other materials.

There is no raw material called powder.

Hello: What are the criteria for choosing ceramic tiles, where to use them, these brands you see are the bricks of the private throwing factory in Guangdong, (the so-called private throwing factory is not a manufacturer of its own kiln, mainly low-grade brick OEM), if it is used in some rental houses, low-rent housing is possible, if it is used in a better place, I recommend buying the top three brands of enterprises in Foshan, the new pearl enterprise, the Hongtao enterprise, the brand of Shuncheng enterprise.

The difference between the so-called Guangdong brick and Shandong brick: Guangdong turn is a little more than Shandong brick positioning, so the cost is higher and the quality is better, because how much cost is used to make how many bricks, different uses, different choices,.

Do you know what a ceramic body coating is? What are the main ingredients?

The main raw materials for the production of ceramics are clay (such as Suzhou soil), quartz, feldspar (also divided into potassium feldspar and albite).

The main raw materials of cement are clinker [the main four raw materials for the production of clinker, limestone (mainly providing CA, sandstone (mainly providing SI), bauxite (or slag, mainly providing AL), iron powder (or steel slag FE)), gypsum, slag, etc.

The main raw materials for the production of glass are: quartz, feldspar (potassium feldspar, albite), soda ash.

The main raw materials of porcelain: clay; The main raw materials of glass: limestone, soda ash, quartz sand; The main raw materials of cement: limestone and clay.

Raw materials for cement: limestone and clay.

Raw materials of glass: soda ash, limestone, quartz.

Raw material of ceramics: clay.

Ceramics: clay, alumina, kaolin, etc.

Glassmaking: quartz sand, soda ash, feldspar and limestone.

Cement: limestone, clay, gypsum.

The main ingredient in the raw material of cement is limestone, glass is made of silica as the main material, and ceramics are also mainly made of clay without limestone.

Glass is not used for cement and ceramics are not clear.

It is necessary to use the mud of the soil, because the ceramic material is a multi-phase inorganic non-metallic material, and most of the raw materials used are natural mineral raw materials or rock raw materials, most of which are silicate minerals.

Most advanced ceramics have high requirements for raw materials and need to be used.

1. High-purity synthetic raw materials.

1. Classification of raw materials.

Generally, the classification of ceramic raw materials is carried out from different perspectives such as different process characteristics, traditional habits and raw material properties.

1) According to the process characteristics of the raw materials, the disadvantage is answered

Plastic raw materials, non-plastic raw materials (or barren raw materials), flux raw materials.

2) According to the use of raw materials, it is divided into:

Raw materials for porcelain blanks, porcelain glazes, pigments and color materials.

3) According to the mineral composition of the raw materials, it is divided into:

Clay raw materials, siliceous raw materials, feldspar raw materials, calcareous raw materials, magnesium raw materials.

4) According to the way of obtaining raw materials, it is divided into:

Mineral raw materials, chemical raw materials.

Generally, we summarize the required ceramic raw materials into three categories, that is, clay raw materials with plasticity. Quartz raw materials with non-plasticity, flux raw materials.

2. Selection of ceramic raw materials

Selection of raw materials used in ceramics. The first is to ensure that it can produce the various crystalline phases and glass equal compositions required for the product after processing. Secondly, it is to ensure that it can adapt to the various process properties required in the processing process.

Specifically, the generation of crystalline phase in the structure requires a class of raw materials that can generate crystalline phases, such as kaolin or clay that can generate mullite crystal phase, quartz raw materials that can generate quartz crystal phase, talc raw materials that can generate oblique stubborn fire radiance repentance, alumina or high alumina raw materials that can generate corundum crystal phase, and ash raw materials that can generate tricalcium phosphate crystal phase, etc. The other type is the so-called flux raw materials that can form the glass phase, such as feldspar, talc, calcium and magnesium phosphate, and so on.

The process performance required for the processing process often hopes that the ceramic raw material has a plastic raw material that can be plastically processed, and a non-plastic raw material (also known as barren raw material) that can reduce shrinkage in drying and firing.