A process for reclaiming the steel slags includes such steps as preparing steel slags and residual steel as raw material, sieving, ball grinding, magnetic separating, and wind classifying to obtain 4 products: high-quality waste steel used for smelting steel, refined iron powder used for smelting iron, micro slag powder used as high-activity additive of concrete, and steel slag aggregate used ...
NSSMC's pipes and tubes are in use in various industrial sectors with different applications and characteristics required, such as oil/gas drilling and transportation, plants, public engineering, construction, automobiles, and industrial machinery. Our diverse manufacturing methods, various steel types from carbon steel to high alloy steel, and world top quality and technologies are valued ...
【Abstract】 In this work,the effects of temperature and cooling rate on the precipitation of carbides in nickel-saving metastable austenitic stainless steel were studied.The test results show that the temperature range of carbide precipitation in the test steel was 500-950℃,and 750℃ was the most sensitive temperature.However,when completely solution treated samples were cooled from high ...
Jul 23, 2021· In ferrous metallurgy, slags are generally referred to man-caused formations, whose amount ranges within 80–85% of the total amount of solid waste products. These slags are formed by the electric steel-making production and by the ladle steel processing. The area occupied by slag dumps exceeds 2.2 thousand hectares.
The mineral and steel slag is also comprehensively processed into environment friendly construction materials such as high strength cement. The Group keeps accumulating professional knowledge, inputting new views to the industry, and grasping every innovative research opportunity so that we can achieve the integration of intensive procedure and ...
Sustainability. Slag cement is a recovered material from the iron production process and because of this, reduces the environmental impact of concrete mixtures. Additionally, slag cement is very effective in reducing permeability and increasing durability in concrete. Click the links below to learn more on slag cement and how it creates a more ...
8 The environmental impact of steel production. Steel production has a number of impacts on the environment, including air emissions (CO, SOx, NOx, PM2), wastewater contaminants, hazardous wastes, and solid wastes. The major environmental impacts from integrated steel mills are from coking and iron-making.
Few research related to stainless steel slag waste for use as a substitute for cement Principal objetive: study of cement replacement by different percentages of stainless steel slags crushed and without crushed for making mortars to determine the optimal replacement rate to increase the economic value of stainless steel slag waste and decrease the
Ground-granulated blast-furnace slag (GGBS or GGBFS) is obtained by quenching molten iron slag (a by-product of iron and steel-making) from a blast furnace in water or steam, to produce a glassy, granular product that is then dried and ground into a fine powder.Ground-granulated blast furnace slag is highly cementitious and high in CSH (calcium silicate hydrates) which is a strength enhancing ...
Jul 17, 2021· Production for the week ending June 26, 2021 is down 0.2 percent from the previous week ending June 19, 2021 when production was 1,839,000 net tons and the rate of capability utilization was 82.9 percent. Adjusted year-to-date production through June 26, 2021 was 45,054,000 net tons, at a capability utilization rate of 78.8 percent.
The $6 million project, in which the Government of Quebec contributed approximately $650,000 through the Quebec Plan. Olympic Steel Inc., a leading national metals service center, today announced that it has amended and extended the maturity of its existing $475 million, five-year asset-based revolving credit facility through June 16, 2026.
cement and concrete production [5]. The solid waste should be used as a raw material for some other industry. There is a need to utilize reuse and recovery technologies to make the industry into a zero solid waste discharge units. The solid waste from the steel industry has been used for slag atomization, rail ballast, road and pavement ...
About 200,000 tons of nickel-containing stainless steel is used each year by the food processing industry in North America. It is used in a variety of food handling, storing, cooking, and serving equipment—from the beginning of the food collection process through to the end.
non-metallic inclusions from entrained mold slag, as documented in many studies such as at Inland Steel No.4BOF Shop [5] and at Great lake works of National steel [6] . Steel cleanliness depends on the amount, morphology and size distribution of non-metallic inclusions in steel.
Market participants are concerning whether it will affect Taiwan's stainless steel industry or not. - more June Steel Shipments Up 33.3 Percent From Prior Year - The American Iron and Steel Institute (AISI) reported today that for the month of June 2021, U.S. steel mills shipped 8,031,516 net tons, a 33.3 percent increase from the 6,023,524 ...
Stainless steel can be cast or wrought. The main difference is in how it is formed into a final product. Cast stainless steel is made by pouring liquid metal into a molding container with a specific shape. Wrought stainless steel starts out at a steel mill, where continuous casters make stainless into ingots, blooms, billets, or slabs.
May 04, 2014· Stainless Steel Manufacturing Processes. Stainless steels contain from 10 % to 30 % chromium. These steels also contain varying amounts of nickel, molybdenum, copper, sulphur, titanium, and niobium etc. The majority of production of stainless steel was through the electric arc furnace (EAF) till around 1970.
aggregate (coarse and Fine) and Cement with that of Stainless Steel Slag on various proportions in Concrete (25% 50% 75% ). The basic objective of this study was to identify alternative source of aggregates and cement and to produce new type of concrete made of stainless steel slag as a green concrete.
Abrasion resistant pipe elbows in thermal power, steel, smelting, cement, machinery, coal, mining, chemical industry, port and other industries have a wide range of applications.General wear - resistant elbow application is wear - resistant ceramic lining, regardless of domestic, are so.Wear-resistant elbow is made of special corundum wear ...
Description and Applications. Rutile semi-basic stainless steel electrode suitable for the welding of austenitic stainless steels with 16-20% Cr, 10-14% Ni and 3-4% Mo. (AISI 317). The use of these steels are limited to corrosion conditions in the presence of sulphuric and sulphurous acid and their salts.
Jul 01, 2017· Tsakiridis et al. studied the use of steel slag for Portland cement clinker production and found that a 10.5% addition of steel slag did not negatively affect the quality of the cement produced. Monshi and Asgarani [52] produced a type of cement from steel slag (with 8%), iron slag and limestone that satisfied the requirements for compressive ...
Sep 28, 2020· Development of zero cement composite for the protection of concrete sewage pipes from corrosion and fatbergs. Resources, Conservation and Recycling, 2021; 164: 105166 DOI: 10.1016/j.resconrec ...
Ceramic-coated pipes for molten metal applications. MPI's ceramic-coated pipe (CCP) is a carbon steel pipe with multiple, thin layers of ceramic coating both exteriorly and interiorly. The ceramic coating is resistant to slag attack and extends the life of the pipe when it is immersed into molten metal or in high temperature atmospheres.
AISI (American Iron and Steel Institute) AISI serves as the voice of the American steel industry in the public policy arena and advances the case for steel in the marketplace as the preferred material of choice. AISI also plays a lead role in the development and application of new steels and steelmaking technology.
Jun 01, 2021· The desired machine should realize the following features: (i) heating the mixture components and maintaining the temperature between 130 °C and 149 °C, (ii) mixing hot SC components with variable blending speed for an approximate volume of 0.035m 3 (35 L), it is suitable to produce the targeted pipe segment of 600-mm external diameter, 900-mm length, and 30-mm wall thickness), (iii) …
Jan 17, 2018· In the pipe from the top of the arc, from top to bottom all-position welding technology, welding speed method, weld appearance, good welding quality, welding materials can be saved, reducing labor intensity is a common hand can not be more widely than now Applied to large-diameter long-distance pipe welding in the lower welding of large-diameter thin-walled tube construction of all power ...
Oct 18, 2017· Stainless steel, alloys, and special pipe: When carbon dioxide and/or hydrogen sulfide are part of the produced fluids, it could necessary to use stainless steel, alloys, and special pipe. For example: 9 Cr is used for H2S applications. 13 Cr for CO2: 13% chromium is selected when there is no H2S in addition to the CO2.
95 steel slag is produced during the direct reduction of iron in an electric arc furnace. 96 Two different samples were obtained in laboratory for analysis of the properties of the 97 stainless steel slag and the ability to fabrication cement mortars. It was obtained stainless 98 steel slag waste unprocessed (Sw) directly from the steel plant ...