Technology of Mineral Raw Materials Granulation by Electric Arc for Manufacturing of Welding Fused Flux

The research and description of modern methods and procedure of welding flux manufacture are presented. The technology of welding fused flux production by influencing on the composition of mineral raw materials furnace burden (from 0,5 mic up to 0,20 mm) with electric arc (diameter graphite electrodes 6-18 mm, current from 200 up to 600 A) is proposed to be significantly reducing the labor input as well as dustiness during the operation and transport and improves mechanical properties (granules strength of 16-19 N/mm2) and surface condition of flux granules. The equipment for the granulation does not require large melting furnace and powerful transformers, fuel gas, coke or oil, i.e. welding flux is easy to manufacture.

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Research on Plasma Electric Arc Granulation Processes of the Ural Region Mineral Raw Materials to Welding Materials for Submerged Arc Welding

Materials Science Forum ◽

10.4028/www.scientific.net/msf.946.945 ◽

2019 ◽

Vol 946 ◽

pp. 945-949 ◽

Cited By ~ 1

Author(s):

Stanislav V. Naumov ◽

Arseny O. Artemov ◽

Kirill I. Belousov

Keyword(s):

Energy Source ◽

Arc Welding ◽

Raw Materials ◽

Functional Materials ◽

Submerged Arc Welding ◽

Electric Arc ◽

Ural Region ◽

Mineral Raw Materials ◽

Welding Flux ◽

Submerged Arc

This article offers a qualitatively new approach for production fused welding fluxes granules, based on the use of a plasma arc and the Ural region raw materials that have a particularly low content of harmful impurities. The processes of fused welding flux granules forming from the Ural region mineral raw materials under the impact of a highly concentrated energy source have been studied. A new fused welding flux for submerged arc welding is produced by plasma electric arc granulation, and has required shape and fractional, chemical and phase composition of the particles. This research presents experimental and theoretical studies of interaction processes of fine-dispersed batch from mineral raw materials with a highly concentrated energy source, aimed at obtaining new information about the basic patterns of the formation, structure and composition of resulting granules of functional materials, such as welding fused fluxes.

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Technology and Equipment for Plasma Electric Arc Granulation of Fused Welding Flux

Materials Science Forum ◽

10.4028/www.scientific.net/msf.946.389 ◽

2019 ◽

Vol 946 ◽

pp. 389-394 ◽

Cited By ~ 1

Author(s):

Arseny O. Artemov ◽

Stanislav V. Naumov ◽

Michael N. Ignatov

Keyword(s):

Raw Materials ◽

Heat Sources ◽

Air Plasma ◽

Labor Costs ◽

Mineral Raw Materials ◽

Welding Flux ◽

Current Voltage ◽

Wide Range ◽

Materials Used ◽

Large Material

The article outlines the main principles of granulation technology for fused welding flux using highly concentrated heat sources (e.g. plasma arc). Modern plasma equipment and methods of its use for producing new welding materials (plasma-granulated welding flux) from mineral raw materials and synthetic mineral alloys are described. The developed technology makes it possible to produce granulated flux in a wide range of fractional composition (from 0.2 to 3 mm). Studies have focused on the influence of granulation regimes (plasmatron moving speed, current, voltage, arc length) on formation process and the morphology of welding flux particles. Mineral raw materials used for granulation were igneous rocks (basalt, hornblendite) and synthetic mineral alloys. The results obtained during experiments on the use of highly concentrated heat sources for granulation of a fused welding flux confirm the feasibility and prospects of this technology. Typical equipment for air-plasma cutting is used, and no new complex technological equipment is required, therefore it eliminates large material and labor costs.

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Strategic approaches of combined electrothermal processing of coal and carbonate mineral raw materials for obtainment of highly efficient synthetic energy carriers and non-fuel products

E3S Web of Conferences ◽

10.1051/e3sconf/20185603017 ◽

2018 ◽

Vol 56 ◽

pp. 03017

Author(s):

Anatoly Zhukov

Keyword(s):

Power Plants ◽

Coal Gasification ◽

Plant Protection ◽

Raw Materials ◽

Liquid Product ◽

Calcium Carbide ◽

Ammonia Nitrogen ◽

Gas Generator ◽

Fuel Gas ◽

Mineral Raw Materials

Coal gasification and the production of gaseous fuels include three principal directions related to the production of fuel gas: 1) composition and heat capacity of the produced gas; 2) gas generator structures; 3) characteristic properties of the obtained alternative product - low CO content and gas toxicity, which allow making full use of this gas for domestic purposes. In industrial processes of coal conversion, the following combined technologies are used most often: - semi-coking + gasification of fixed ash (low-temperature coke); - semi-coking + hydrogenation of liquid product (tar); - gasification + synthesis of high molecular weight hydrocarbons from the produced SYN gas (СО+Н) (Fischer-Tropsch synthesis). The choice of the layout for obtaining SLF (synthetic liquid fuel) can be based on specific conditions, the cost and quality of coal, energy supply, market conditions. The products obtained in the process of gasification and hydrogenation of coals pollute the atmosphere much less than the coal burned in electrical power plants. When implementing the organizational and technological model of innovative production, the first stage includes the following combined approaches for the processing of mineral raw materials and new products: 1. processing of carbonic mineral raw materials: calcium carbide, carbon dioxide (in a gaseous, liquid or solid state); 2. acetylene, plant growth regulators (PGRs), plant protection products (TAKAR). The second stage includes fuel and non-fuel products: 1. synthetic ethyl alcohol (ethanol), antifreeze, ethylene glycol, dichloroethane, synthetic drying oils, acetone, etc .; 2. carbamide (urea), ammonia, nitrogen in gaseous and liquid states, methanol, gasoline, etc.

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Interaction Behavior of Biogenic Material with Electric Arc Furnace Slag

Fuels ◽

10.3390/fuels2040024 ◽

2021 ◽

Vol 2 (4) ◽

pp. 420-436

Author(s):

Xianai Huang ◽

Ka Wing Ng ◽

Louis Giroux ◽

Marc Duchesne ◽

Delin Li ◽

...

Keyword(s):

Raw Materials ◽

Ghg Emissions ◽

Melting Furnace ◽

Steel Production ◽

Carbonaceous Material ◽

Electric Arc ◽

Induction Melting ◽

Fossil Carbon ◽

Biogenic Carbon ◽

Biogenic Material

Electric arc furnaces (EAFs) are used for steel production, particularly when recycling scrap material. In EAFs, carbonaceous material is charged with other raw materials or injected into molten slag to generate foam on top of liquid metal to increase energy efficiency. However, the consumption of fossil carbon leads to greenhouse gas emissions (GHGs). To reduce net GHG emissions from EAF steelmaking, the substitution of fossil carbon with sustainable biogenic carbon can be applied. This study explores the possibility of the substitution of fossil material with biogenic material produced by different pyrolysis methods and from various raw materials in EAF steelmaking processes. Experimental work was performed to study the effect of biogenic material utilization on steel and slag composition using an induction melting furnace with 50 kg of steel capacity. The interaction of biogenic material derived from different raw materials and pyrolysis processes with molten synthetic slag was also investigated using a tensiometer. Relative to other biogenic materials tested, a composite produced with densified softwood had higher intensity interfacial reactions with slag, which may be attributed to the rougher surface morphology of the densified biogenic material.

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Modern Methods of Analysis in Mineral Raw Materials Industry

BHM Berg- und Hüttenmännische Monatshefte ◽

10.1007/s00501-012-0017-8 ◽

2012 ◽

Vol 157 (6-7) ◽

pp. 230-235

Author(s):

Wolfhard Wegscheider

Keyword(s):

Raw Materials ◽

Mineral Raw Materials ◽

Methods Of Analysis ◽

Modern Methods

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SТRATEGIC APPROACHES OF COMBINED ELECTROTHERMAL PROCESSING OF COAL AND CARBONATE MINERAL RAW MATERIALS FOR OBTAINING OF HIGHLY EFFICIENT SYNTHETIC ENERGY CARRIERS AND NON-FUEL PRODUCTS

Professor’s Journal. Series: Technical science ◽

10.18572/2686-8598-2019-3-3-5-11 ◽

2019 ◽

Vol 3 ◽

pp. 5-11

Author(s):

A.V. Zhukov ◽

◽

A.V. Mikhalkov ◽

Keyword(s):

Power Plants ◽

Coal Gasification ◽

Plant Protection ◽

Raw Materials ◽

Liquid Product ◽

Calcium Carbide ◽

Plant Protection Products ◽

Gas Generator ◽

Fuel Gas ◽

Mineral Raw Materials

coal gasification and the production of gaseous fuels include three principal directionsrelated to the production of fuel gas: 1) composition and heat capacity of the produced gas; 2) gas generator structures; 3) characteristic properties of the obtained alternative product -low CO con-tent and gas toxicity, which allow making full use of this gas for domestic purposes. In industrial pro-cesses of coal conversion, the following combined technologies are used most often: — semi-cok-ing + gasification of fixed ash (low-temperature coke); — semi-coking + hydrogenation of liquid product (tar); — gasification + synthesis of high molecular weight hydrocarbons from the produced SYN gas (СО+Н) (Fischer-Tropsch synthesis). The choice of the layout for obtaining SLF (synthetic liquid fuel) can be based on specific conditions, the cost and quality of coal, energy supply, market conditions. The products obtained in the process of gasification and hydrogenation of coals pollute the atmosphere much less than the coal burned in electrical power plants. When implementing the organizational and technological model of innovative production, the first stage includes the following combined approaches for the processing of mineral raw materials and new products: 1. processing of carbonic mineral raw materials: calcium carbide, carbon dioxide (in a gaseous, liquid or solid state); 2. acetylene, plant growth regulators (PGRs), plant protection products (TAKAR).The second stage includes fuel and non-fuel products: 1. synthetic ethyl alcohol (ethanol), anti-freeze, ethylene glycol, dichloroethane, synthetic drying oils, acetone, etc .; 2. carbamide (urea), am-monia, nitrogen in gaseous and liquid states, methanol, gasoline, etc.

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