Introducing neural-network algorithms into an automated system designed to control metallurgical processes. This article describes one approach to introducing neural-network algorithms into the structure of systems that control metallurgical operations, including adaptive, neural- network, and optimization methods.
At present, it is mainly used in the three major industries of metallurgy, chemical industry and building materials, followed by light industry, optics, sculpture and national defense industry. Fluorspar can be divided into three categories according to its grade and use: (1) Acid-grade fluorite ore used in the chemical industry, the mass ...
The other key market for quartz is the metallurgical industry, as it is the best source for silicon metal and polysilicon, the semiconductor at the heart of electronics, …
23.2.1 Heat Index. An amount of 400–500 g of silica (quartz sandstone) is introduced in the muffle furnace at 1,300 °C for 1 h. After cooling to room temperature, the samples were carefully placed on a series of screens (20, 10, 4 and 2 mm) [6, 7].23.2.2 Thermal Strength Index. The same amount of silica (quartz, sandstone) in the muffle …
The metallurgical industry is a major source of anthropogenic greenhouse gas emissions. ... Chromite ore or pre-treated chromite concentrate is used as a chromium carrier and quartz and lime are ...
The main share of metallurgical coke is consumed in the steel industry to produce hot metal, which, in turn, is used as the main ingredient to make steel (Babich et al., 2016).Nut and breeze cokes as undersieve products of metallurgical coke are also widely used in the steel industry and, namely, in the BF and sintering processes, …
This article deals with material research of selected types of quartz and quartzites in order to determine the priority of their use in the production of ferrosilicon …
From Jewelry making and gemstones, for its ability to luster, to brick making in the refractory industry for its physical strength and to watches and clocks for its …
Carbon is the most common reducing agent used in metallurgical processes in the form of coke or coal. The hydrogen gas used by sponge iron-making industry derives it from natural gas. c. Thermal functions: The metallurgical reactions occur at elevated temperature and thermal energy is needed to sustain the process.
In Si and FeSi production, the main Si source is SiO 2, in the form of quartz.Reactions with SiO 2 generate SiO-gas that further reacts with SiC to Si. During heating, quartz will transform to other SiO 2 modifications with cristobalite as the stable high temperature phase. Transformation to cristobalite has been investigated and shown to be a slow …
As much as 80% of the initial metallurgical grade silicon is lost in the process. Sawing c-Si wafers creates a significant amount of waste silicon dust called kerf, and up to 50% of the material ...
Abstract. The metallurgical industry produces a large amount of residues and wastes that can be successfully applied in building and construction. Key sectors, like iron and steel, aluminium, copper, zinc, lead, silicon and ferrosilicon, were analyzed, the residues identified, and potential applications described.
The industrial pollution caused by metallurgical waste accumulation has a negative impact on the three environmental factors: soil, air and water. Therefore, the correct management of these wastes would lead to: protection of the environmental factors, the saving of natural resources and sustainability of the steel industry. The purpose of …
Literature suggests that a lack of quartz depression does not mean that there is no adsorption of starch to the surface of quartz (Filippov et al., 2013). Several authors reported starch adsorption on hematite and not on quartz surface ( Balajee and Iwasaki, 1969, Cooke et al., 1952, Peres and Correa, 1996 ).
Metallurgical waste decomposition to recover metals: Purification of refractory metals: Plasma arc melting furnace [8,9,10] ... Thermal plasma covers a wide area in the field of mineral and ore processing in the metallurgical industry. The use of transferred and nontransferred arc plasma allows the decomposition of minerals to …
This PhD-thesis is a result of the study on important properties of quartz as a raw material for the metallurgical production of ferrosilicon and silicon metal. This includes defining …
Abstract. Metallurgical-grade silicon (MG-Si) was successfully produced by carbothermic reduction-smelting of Egyptian quartz using a mixture of carbonaceous materials in a locally made semi-pilot ...
For the metallurgical and engineered stone industries, they need to reliably deliver quartz of consistently high chemical purity – and for silicon production and …
Abstract. The use of artificial intelligence (AI) in metallurgical industry and their refinement is discussed. Metallurgical production included a wide range of complex distributed operations from ...
Consumption of rare-earth metal (REM) oxides, such as cerium and lanthanum, is significantly lower than their production. This discrepancy is attributed to the complex extraction of all REMs, where the share of cerium is approximately 40%. This article proposes a method for processing REM oxides for their use as master alloys in …
The highest quality quartzes and quartzites are commonly used in metallurgy, but not all types of these silicon raw materials are suitable for the production …
METALLURGICAL USES FLUXES FOR METALLURGY. METALLURGICAL USES FLUXES FOR METALLURGY. HAROLD R. KOKAL AND MADHU G. RANADE. A metallurgicalf2ux is a substance that is added to combine with gangue (unwanted minerals) during ore smelting, with impurities in a molten metal, or with other additives in metal …
The metallurgical industry is consequently a key market for quartz: it is the best source of silicon metal and polysilicon, the semiconductor at the heart of electronics, which is also used for other products, such as photovoltaic cells. Another important market is engineered stone, for uses such as kitchen countertops or tiles.
Composed primarily of high-purity silica, it undergoes a meticulous manufacturing process to achieve the desired properties that make it a linchpin in the metallurgical processes of steel production. Composition and Characteristics. 1. High-Purity Silica: Silica, derived from quartz, is the fundamental building block of Silica Ramming Mass. Its ...
The metallurgical industry is consequently a key market for quartz: it is the best source of silicon metal and polysilicon, the semiconductor at the heart of …
8. Metallurgical Industry. In the metallurgical industry, quartz can be used to make refractories (silica brick), smelting siliceous alloys (ferrosilicon, silicomanganese, silicochromium) or as fluxes. Those with high silica content can be used as raw materials for industrial silicon production.
from quartz are as follows: bulk production of metallurgical-grade silicon via carbothermic reduction in a submerged furnace, refining of metallurgical-grade silicon via the chemical means to polycrystalline silicon, or through the metallurgical route to solar-grade silicon, wafer manufacturing, and, lastly, silicon solar cell manufacturing.
In China's quartz sand consumption structure, metallurgical industry and refractory materials are the main consumers in the quartz stone market at present, accounting for about 62%, and the total ...
High-purity quartz (HPQ) is the only naturally occurring and economically viable source for the production of silicon. Silicon is a critical mineral, and a key …
DOI: 10.1007/s11015-024-01643-3 Corpus ID: 268432178; Processing of Rare Earth Metal Oxide for Use as a Master Alloy in the Metallurgical Industry @article{Nikulin2024ProcessingOR, title={Processing of Rare Earth Metal Oxide for Use as a Master Alloy in the Metallurgical Industry}, author={I. S. Nikulin and T. B. Nikulicheva …
The highest quality quartzes and quartzites are commonly used in metallurgy, but not all types of these silicon raw materials are suitable for the production of ferrosilicon and pure silicon,...
In China, it is pyrite, quartz, calcite, barite, kaolin, and gypsum. The feed grade is usually between 2 and 3% antimony and treated through hand sorting, spiral concentration, and flotation. ... The material presented in this review provides a general context of antimony in the metallurgical industry, its chemical behavior in aqueous …
Production of metallurgical-grade silicon. Metallurgical-grade silicon is produced from quartz by carbothermal reduction. This involves mixing the quartz with carbon-containing material (coal, coke, charcoal, woodchips) and heating it to about 1500–2000 °C in a submerged electric arc furnace. The reduction takes place according …
The total value of industrial minerals production, including construction minerals, was $58.2 billion. Of this total, $27.7 billion was construction aggregates production (construction sand and gravel and crushed stone), and over $30.5 billion represented production of industrial minerals described in this paper, or nearly 52% of the total ...
The paper presents a generic architecture of an industrial chatbot developed for the production of metallurgical silicon, describes the interaction of the application with the process control ...
The highest quality quartzes and quartzites are commonly used in metallurgy, but not all types of these silicon raw materials are suitable for the production of ferrosilicon and …
Global Quartz Crucible Market: Focus on Application, End-use Industry, Type, Equipment, and Region - Analysis and Forecast, 2024 - 2031
The photovoltaic (PV) industry requires high-quality silica sand to produce metallurgical-grade silicon (MG-Si) for silicon PV (Si PV). However, high-quality deposits are scarce, and using lower-quality resources may increase the carbon footprint and cumulative energy demand (CED) of Si PV modules.
