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High alumina bricks refer to refractory materials with an AL3 content of more than 48%, mainly composed of corundum, mullite, and glass.. Applications of High Alumina Bricks It is mainly used in the metallurgy industry to build the plug and nozzle of a blast furnace, hot air furnace, electric furnace roof, steel drum, and pouring system, etc.
Refractory materials, like all solids, expand on heating, the degree of expansion being related to the chemical composition of the refractory.Magnesium oxide has the highest coefficient of expansion of the refractory materials commonly used. Silicon carbide has a comparatively low coefficient of expansion and fused or vitreous silica has the lowest expansion of all the …
In the current study, the wettability between 304 stainless steels and refractory materials was investigated using the sessile drop method in a reducing atmosphere at 1550 °C. The contact angle ...
Download Citation | The role of the refractories in the production of stainless steel | The influence of the steelmaking process on the quality and the performance of refractory materials used on ...
To provide a process for producing high-purity highly oxidized refractory particles easily with good productivity by treating a spent refractory containing ZrO 2 and Al 2 O 3 to reduce components other than ZrO 2 and Al 2 O 3 to levels unproblematic for practical use as raw material for electrofused refractories and to increase the content of the ZrO 2 and/or Al 2 O 3 …
US20100240518A1 US12/794,839 US79483910A US2010240518A1 US 20100240518 A1 US20100240518 A1 US 20100240518A1 US 79483910 A US79483910 A US 79483910A US 2010240518 A1 US2010240518 A
Unshaped Refractory. Castable; Stainless Steel. Stainless Steel Pipe; Contact Us. 1002, Block B, Huijin Building, High-tech Zone, Zibo City Shandong; [email protected] +86; Refractory production process. ... corundum bricks and magnesium bricks. Their bodies are dense, with high mechanical strength, high structural strength ...
Abstract. In the current study, the wettability between 304 stainless steels and refractory materials was investigated using the sessile drop method in a reducing atmosphere at 1550 °C. The contact angle between the stainless steel and the original refractory was 133°, and was 126° between the stainless steel and the used refractory.
Refractory mixing is a method of mixing, accompanied by a certain degree of extrusion, kneading, and venting. The mixing process is to make the components in the mud reach a uniform distribution after mixing, that is, have the same composition and particle composition in the unit weight or volume.
A method of producing an economical refractory material from the slag by-product of a high-carbon ferrochromium ore smelting process wherein the slag by-product is a fused material in solid particulate or mass form formed of a mixture of compounds comprising principally magnesia, alumina and silica, with lesser amounts of chromic oxide and other minor oxide impurities therein.
Production Process of Refractory According to the degree of compactness and appearance of different products, there are sintering method, casting method and melt blowing method.
Pickling and passivating stainless steel. This resource describes the surface treatments known as pickling and passivation that can be applied to stainless steel. Pickling uses nitric and hydrofluoric acids to remove a thin layer of metal from the surface. Passivation uses nitric acid to improve the quality and thickness of the passive layer on ...
The present invention also relates to a process for producing such an article. The present invention relates to refractory articles in general having improved surface properties. The objective of the invention is to propose an improvement of the refractory articles comprised of a fused silica matrix which will overcome the some of the defects ...
production refractory particles refractory particles Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Granted Application number EP08857875A Other languages German (de) French (fr)
Abstract. In the current study, the wettability between 304 stainless steels and refractory materials was investigated using the sessile drop method in a reducing atmosphere at 1550 °C. The contact angle between the stainless steel and the original refractory was 133°, and was 126° between the stainless steel and the used refractory.
In this work, austenitic stainless steel specimens were locally reinforced with WC particles. The reinforcements were fabricated via an ex situ technique based on powder technology. Mixtures of WC, Fe, and M0101 binder were cold-pressed to obtain powder compacts. After debinding and sintering, the porous WC–Fe inserts were fixed in a mold …
The experiment was carried out in an induction furnace. The initial compositions of steel and refining slag are shown in Table 1 and Table 2.The composition of the refining slag adopted in current research is designed according to the actual production process of Ti-contained steel from China and literature [].The crucible came with Shandong Refractory …
Refractory manufacturing involves four processes: raw material processing, forming, firing, and final processing. Figure 11.5-1 illustrates the refractory manufacturing process. Raw material processing consists of crushing and grinding raw materials, followed if necessary by size classification and raw materials calcining and drying.
Production of 316L Stainless Steel (SS316L) Foam via Slurry Method 709 sintered in a box furnace to produce bonding between the melted powder particles and to increase the strength and hardness of the mechanical properties. The sinter temperature applied was 1300oC, at which temperature the metal powder molecules
According to the compactness and shape of the products, the production process methods of refractory materials mainly include sintering method, fusion casting method, melt injection method and non-sintering method. (1) Sintering method ...
The mechanical and drying behavior of refractory castables that contained short and long steel fibers are compared with castables that contained polyaramid fibers. The heat-up …
Refractories and slags play a vital role in the production of stainless steel. They are in intimate contact with the steel at temperature, and chemical reactions between the three can and do occur. These interactions can be beneficial, in the case of active tundish and ladle slags, and negative in the case of refractory erosion and slag entrapment.
September 29, 2021. The mechanical properties of refractory materials refer to the strength of the material at different temperatures, elastic and plastic properties. This type of property characterizes the material's ability to resist various deformations and stresses caused by external forces under different temperatures without breaking.
Refractory materials for lining metallurgical vessels have always played an important part in crude steel production. Although their function used to be almost exclusively one of protecting the steel casings of the vessels, they must today be regarded as an intrinsic component of metallurgical process. Modern refractory technology is not based ...
A process for producing high-purity and highly oxidized refractory particles easily with high productivity which comprises treating a spent refractory containing ZrO2 and/or Al2O3 to decrease components other than ZrO2 and Al2O3 to levels unproblematic for practical use as raw material for electrocast refractories and thus enhance the contents of ZrO2 and/or Al2O3.
Herein, Al 2 O 3 and TiO 2 particles are introduced into the 5Cr13 high-carbon martensite stainless steel, aiming to improve its mechanical properties and cold-deformation ability. The results prove that the introduced oxide particles lead to enlarged equiaxed zone of the ingot, together with refinement in its columnar and equiaxed dendrites.
According to the different dense degree and shape of products, the production process methods of silica brick mainly contain sintering method, casting method, melt blowing method and non-firing method. 1. Sintering method Sintering method is part of the raw material will be pre-fired into clinker, broken and sieved, and then according to a certain ratio and raw material mixture, …
