Alumina refractory applications circulation boiling roaster

Circulation boiling roaster alumina refractories entire device totaled 762t, mainly castable, firebrick, calcium silicate boards, ceramic fiber and refractory clay five categories, as well as fixed refractory anchors.
1, the working layer of refractory
Refractory castable total 351t, for a Venturi cooling cyclone, fluidized bed cooler, all pipes, flues and boiling roaster and lower part of the cyclone cone, mostly for double or triple.
Firebrick shared 269t, mainly used in boiling roaster, recycling cyclone, two cyclones, two venturi dryer and flue.
According boiling roaster process characteristics and different process parameters and working conditions, working layer refractories different types and layers. Depending on temperature, material properties, process piping for light and heavy casting configuration, the main equipment lined with refractory insulation + insulation + working layer configuration, refractories better energy conservation.
2, refractory insulation
There are lightweight castable refractory insulation, lightweight insulation tiles, calcium silicate boards and refractory fibers.
Castable
Mainly used in the fluidized bed cooler, the cooling cyclone, a venturi dryer, and two other major venturi dryer unit's top and all the inside pipes and flues.
Insulation bricks
Insulation bricks shared 41.76t, mainly used in the fluidized bed cooler, a venturi dryer and two cyclones.
Calcium silicate board
Calcium silicate board shared 97.5m3, 50mm thick and 30mm thick with two specifications, mainly used in boiling roaster, recycling cyclone, cyclone and a cooling venturi dryer and so on.
Refractory fiber
Refractory fiber Shared 2.5t, divided refractory fiber classes, refractory fiber felt classes and refractory fiber blankets, mainly used in expansion joints, expansion joints, brackets and into the hole as well as a variety of processes around the hole.
Anchors
Anchor member is lined with the main component, its role is the liner firmly bonded with the furnace wall.
Distribution and furnace anchors, refractory nature, lining thickness, the use of location and shape of the chosen anchor and materials related, there are 15 types, 40 kinds of specifications, weight about 3000kg anchoring system on the lining of the stress distribution thermal stress and thermal expansion and contraction of the balance, extended lining life, play a vital role.

The garnet purchase skills

Garnet is a complex composed of silicate minerals from a variety of metal elements, so in addition to the extremely rare blue, red, green, orange, purple and black garnet are produced. Because different connotation mineral elements, garnet will show different color characteristics. Pomegranate and Green Bi garnet most commonly raised, and the Green Bi pomegranate is the higher price varieties. Originally garnet belong to the middle and low gems, but the high quality Green Bi garnet Origin, low production reasons, has a high value, among the high-grade gems out, comparable to the highest bidder with emeralds.
Buy garnet, should be absorbed in body mass, high refractive index, strong luster, pure color as an important selection criteria. As January birthday stone, garnet symbolizes the faithful, love and chastity. Especially for women, garnet good beauty effect. It is said that the body tired, weak and trauma can play a very good therapeutic effect. Therefore, we can often see women like to wear garnet rings, bracelets and pendants. In fact, if to a jewelry store you will find a garnet bracelets, but also tens of dollars, then why some branded jewelery will be high it? Reason is very simple, is that jewelry design, production and other elements, sometimes to buy jewelry to consider many elements to measure price.

Fume Definition

Silica fume (also called silica powder), also known as silica fume silica fume. Industrial furnace at high temperature silicon and ferrosilicon smelting process, with the exhaust fumes escaping capture by special treatment from the collection device. In the escape of smoke in, SiO2 content of about 90% of total dust, particle size is very small, the average particle size is almost the nanometer level, it is known as silica fume.
Silica fume research began Scandinavian countries, although in the 1950s that people have a better understanding on the role of silica fume and preliminary research, but is used in the actual project since the 1970s, first in Norway and Sweden and other countries in the port terminals, North Sea oil and underground mines is partly based on silica fume concrete, in 1982, Norway in volts Nuoweisi dam formally adopted a fume concrete dam, the early 1980s, established in Quebec, Canada silica fume concrete, and large volume fume concrete pilot study, mixing high-grade concrete 10,000 m3, 1983 the United States with silica fume concrete repair on the river Orinoco Funi card check dam stilling basin to good effect. Rest of the world are also stepping up research and application.
The history of research on silica fume is not long, just 10 years time, 1985 East Institute survey MEW MEW tenth scientific institutes and Engineering Bureau for the first time in Sichuan Yuzixi two power plants in the trial of silica fume concrete in the plant silica fume concrete in 3% to 7% in order to improve the early strength, speed template turnover, to achieve the desired effect, in addition, the diversion tunnel shotcrete, silica fume 715% in order to reduce the amount of concrete rebound, NHRI In dahuofang water engineering, Gezhouba longyangxia sluice sluice gate repair buildings and other projects have adopted the silica fume concrete is better.
IWHR on silica fume concrete durability and silica fume cement grout algae carried out some research and Ertan foundation consolidation grouting, the Pan dam spillway restoration project, Ankang and Sichuan autumn of plant guide stemming the flow hongtong repair and other projects using a silica fume concrete, silica fume cement grout. All of these, described as a high-performance concrete silica fume concrete in engineering increasingly important, so its properties, especially its strength and durability studies have attracted much attention.

The story about the quartz

Quartz is a physical and chemical properties of mineral resources are very stable, crystal belongs to trigonal system of oxide minerals, ie, low temperature quartz (a-quartz), quartz the most widely distributed group minerals in a mineral species. Generalized include a high-temperature quartz quartz (b-quartz). Quartz block, also known as silica, is the production of quartz sand (also known as silica sand) of raw materials, but also quartz refractories and firing ferrosilicon raw materials.
Quartz chemical formula SiO2, the main component of natural quartz stone quartz, which often contain a small amount of impurities such as Al2O3, IMO,, CaO, MgO, etc. There are various types. Ceramics are used in raw materials quartz, quartz sand, quartzite, sandstone, silica, opal, diatomaceous earth, etc., are also rich in rice shell ash SiO2. Often has the appearance of white quartz, white, gray translucent state, Mohs hardness of 7, broken glass mask shiny gloss or fat, the proportion varies due to crystal, changes in between 2.22-2.65. With the ordinary sand, crystal is "from the same womb" of a substance. When the time is perfect crystalline silica crystal; silica gel dehydration is the agate; aqueous colloidal silica after solidification become opal; silica grains smaller than a few microns, on the formation of chalcedony, flint, secondary quartzite.
Means plasticity quartz material, with the clay in the heat generated porcelain mullite crystals gives a high mechanical strength and chemical stability, and can increase the translucency of the body, is the preparation of a good glaze raw materials.
King City, Republic of multi-use Sambo Punta produced quartz, the new China was founded mostly used planetesimals are chang, Xiushui quartz and other places, especially after 2000, the amount of surge. Glaze was 10% -30%, should be washed before use chosen to remove dirt impurities on the kiln calcination, easy smash.
Colorless and transparent quartz variant, the Greeks called "Krystallos", meaning "white ice", they were convinced that quartz is durable and rugged ice. Ancient Chinese people believe that on the mouth with cold crystal to thirst.
Quartz is the most widely distributed of the Earth's surface minerals, its use is also quite extensive. Far in the Stone Age, people use it to make stone axes, arrows and other simple tools of production, in order to hunt for food and fight against enemies. Clock, the electronic device used as the standard of the piezoelectric quartz frequency; molten glass is made, can be used for making optical instruments, glasses, glass and other products; precision instruments can be done bearing, abrasive materials, glass, ceramics, etc. industrial raw materials.
Quartz body contains tiny bubbles or liquid filling cracks, it will pass interference light generated rainbow, can be made into fine jewelry. Napoleon's wife, Empress Josephine (Empress Josephine) has a dazzling jewel collection is made of quartz rainbow jewelry.

Benefits and use of corundum

Corundum benefits: a high temperature, corrosion resistance, high strength and other properties, it poured with steel sliding gate, smelting rare metals, special alloys, ceramics, blast furnace lining (walls and tubes); chemical containers, spark plugs, anti- Thermal oxidation coating.
1, corundum is called dental industry: mainly used in the refractory, grinding wheels, sand blasting.
Sandblasting corundum - blasting abrasive hardness, high packing density, no free silica, heavy, good toughness, Okay corundum is the ideal "green" blasting material, widely used in aluminum, copper profiles of glass, washed jeans precision molds and other fields;
2, free grinding - grinding grade abrasives used in kinescope, optical glass, silicon, lenses, clocks, glass, crystal glass, jade and other areas of freedom ground, is commonly used advanced abrasive material;
3, resin abrasive - Abrasive have the right color, hardness, toughness, suitable particle section types and edge retention, resin abrasive used, the results are satisfactory;
4, Coated Abrasives - Abrasive sandpaper, gauze and other manufacturers of raw materials;
5, corundum functional filler - mainly used for automobile brake parts, specialty tires, specialty building products in areas such as construction of motorways, runways, terminals, parking lots, industrial flooring, sports and other wear-resistant materials ;
6, the filter media - is a new type of abrasive applications, the use of particulate abrasive medium as the bottom of the filter bed, to purify drinking water or waste water, is home to a new water filtration material, especially for non-ferrous metal processing, oil drilling mud weighting agent :
7, abrasive water-jet cutting - is abrasive cutting media, relying on high-pressure water jet cutting basic, used in oil (gas) pipelines, steel and other components of the cutting, is a new, environmentally friendly, safe cutting.

Fume Definition

Silica fume, also known as silica fume. Industrial furnace at high temperature silicon and ferrosilicon smelting process, with the exhaust fumes escaping capture by special treatment from the collection device. In the escape of smoke in, SiO2 content of about 90% of total dust, particle size is very small, the average particle size is almost the nanometer level, it is known as silica fume.
Silica fume research began Scandinavian countries, although in the 1950s that people have a better understanding on the role of silica fume and preliminary research, but is used in the actual project since the 1970s, first in Norway and Sweden and other countries in the port terminals, North Sea oil and underground mines is partly based on silica fume concrete, in 1982, Norway in volts Nuoweisi dam formally adopted a fume concrete dam, the early 1980s, established in Quebec, Canada silica fume concrete, and large volume fume concrete pilot study, mixing high-grade concrete 10,000 m3, 1983 the United States with silica fume concrete repair on the river Orinoco Funi card check dam stilling basin to good effect. Rest of the world are also stepping up research and application.
The history of research on silicon carbide powder is not long, just 10 years time, 1985 East Institute survey MEW MEW tenth scientific institutes and Engineering Bureau for the first time in Sichuan Yuzixi two power plants in the trial of silica fume concrete in the plant silica fume concrete in 3% to 7% in order to improve the early strength, speed template turnover, to achieve the desired effect, in addition, the diversion tunnel shotcrete, silica fume 715% in order to reduce the amount of concrete rebound, NHRI In dahuofang water engineering, Gezhouba longyangxia sluice sluice gate repair buildings and other projects have adopted the silica fume concrete is better.
IWHR on silica fume concrete durability and silica fume cement grout algae carried out some research and Ertan foundation consolidation grouting, the Pan dam spillway restoration project, Ankang and Sichuan autumn of plant guide stemming the flow hongtong repair and other projects using a silica fume concrete, silica fume cement grout. All of these, described as a high-performance concrete silica fume concrete in engineering increasingly important, so its properties, especially its strength and durability studies have attracted much attention.

Corundum and widespread use of the chemical composition

The origin of most of the bauxite and corundum origin are closely related. Rich country of Henan bauxite, bauxite production giant, it has also become the largest producer of corundum area. Corundum has a hardness, toughness, resistance to crushing ability, high temperature, anti-oxidation, anti-corrosion, low cost, for other characteristics.
Corundum widely used in abrasives, refractories, sandblasting, grinding and polishing, carborundum wearable Floor, precision casting shell mold making, with high purity, good crystalline liquidity strong, low coefficient of linear expansion, corrosion-resistant characteristics .
Brown fused aluminum oxide (Al2O3) is not less than 92.5% corundum widely often used in wear industry, which there are many types, the most common is washed corundum.
Corundum is often used in an ink jet washing of production, this is because, under extreme pressure, it can use its sharp corners hit the surface which is the other advantages not corundum. Then washed for inkjet corundum dust generated when handling relatively small, to a certain extent, to ensure the operator's health. As slag relatively brittle, the jet mill process, the formation of small particles easily crashing, relatively small proportion of the slag, slag resulting small particles suspended in the air, causing environmental pollution, too, is a very delicate quartz sand abrasive, but definitely not comparable and corundum.