Use of steelmaking slags

Galkin, M. P.; Larionov, V. S.; Степанов, А. В.; Небольсин, В. А.; Milovanov, I. F.; Nikitin, G. S.

doi:10.1007/bf02513017

Cited by 4 publications

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“…For effective application of gravitational methods for division of components of steel-smelting slag, it is necessary to have preliminary data on the chemical composition, physical and physic-mechanical properties of the processed slag. Also, at gravitational enrichment such indicators as density, fractional and particle size distribution of the minerals which are a part of slag [2] are of great importance. Taking into account it we will consider in more detail influence of these parameters on indicators of gravitational enrichment.…”

Section: Research Of Processes Of Release Of Iron and Its Oxidic Connection By Methods Of Gravitational Enrichmentmentioning

confidence: 99%

Development of Technology of Release of Iron and Its Oxidic Connections from Dump Steel-Smelting Slag

Matkarimov¹,

Aa²,

Bb³

2019

Preprint

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In article questions of development low-waste technologies of processing of steel-smelting slag are considered, gland allowing by extraction and its connections from steel-smelting slag to receive additional raw materials for production became, and the remains to use in building industry. Studying of gravitational methods of enrichment of steel-smelting slag and heat treatment the ore-fuel of pellets is the basis for work. Proceeding from it, in work modern physic-mechanical, chemical and physical and chemical methods of researches (UV-spectroscopy, electronic microscopy, the granulometric analysis) are used.

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Section: Research Of Processes Of Release Of Iron and Its Oxidic Connection By Methods Of Gravitational Enrichmentmentioning

confidence: 99%

Development of Technology of Release of Iron and Its Oxidic Connections from Dump Steel-Smelting Slag

Matkarimov¹,

Aa²,

Bb³

2019

Preprint

View full text Add to dashboard Cite

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“…In this case, the purity of the starting material practically does not affect the result of inoculation. This can be a revolutionary approach to solving an urgent problem of metallurgical production -the problem of recycling waste slags of metallurgical production, primarily copper and nickel production [7][8][9][10]. Copper, titanium and nickel as alloying elements, entering the composition of "SAE" inoculant, have a very favorable influence on the iron structure and give it a number of specific properties, as a kind of "vitamin" additives.…”

Section: Modification Of Surface Active Elementsmentioning

confidence: 99%

“…So, there is a problem of finding other cheaper sources of copper and nickel, as well as titanium. Such sources can be wastes of copper, nickel, and titanium production [7][8][9][10][11].…”

Section: Modification Of Surface Active Elementsmentioning

confidence: 99%

“…The studies have established that CIS metallurgical enterprises for the last 100 years have produced more than 500 million tons of waste slags [7]. According to [8], the number of nonrecyclable waste slags of metallurgical production is >300 million tons, including copper wastes >of 12.4 million tons, which occupy hundreds of thousands of land hectares.…”

Section: Materials Engineering and Technologies For Production And Pr...mentioning

confidence: 99%

“…Metallographic examination of the product of copper additional recovery from waste slags of Karsakpayskiy Plant of Zhezkazganskiy Mining and Smelting Complex has showed that the structure contains a large variety of highly dispersed non-metallic inclusions, especially sulphides and a large number of pure copper inclusions. The microstructure of this intermediate and its metallographic analysis is shown in Fig.1.The studies have established that CIS metallurgical enterprises for the last 100 years have produced more than 500 million tons of waste slags[7]. According to[8], the number of nonrecyclable waste slags of metallurgical production is >300 million tons, including copper wastes >of 12.4 million tons, which occupy hundreds of thousands of land hectares.…”

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Nonwaste Recycling of Nonferrous Metallurgy Slags in Iron Casting

Davydov

Gorlenko

2017

SSP

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Use of bank slags to form sills

Moskalenko¹,

Arslanov²,

Kamyshev³

et al. 2000

Metallurgist

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669.183.4 The processing of metallurgical wastes has received much attention in recent years [1][2][3]. One approach to solving this problem is recycling.In searching tbr optimum methods of utilizing refining products, we examined the feasibility of using bank open-hearth slag to make up the sills of open-hearth and two-bath furnaces. This material was chosen because the sills must have certain service properties: resistance to erosion and high temperatures and stability under the ferrostatic and hydrodynamic pressure exerted by the molten metal and slag. The material must also be inexpensive and readily available. Raw dolomite has traditionally been used in this capacity, but in recent years it has been replaced by crushed limestone. In connection with the continually rising cost of limestone, an attempt was made to replace it with a cheaper material -graded bank slag from open-hearth operations.When the sills are being formed, a substantial portion of the crushed limestone is usually spilled onto the working platform. It is then raked off by the charging machine and dropped into a slag ladle. The part of the sill left after a heat is also placed in the ladle.A slag sample of the 10-40 mm traction that was obtained by the inquartation method showed that 15% of it was crushed limestone. The presence of such a quantity of partially roasted limestone allowed repeat use of the slag as a material for sill construction, even though the main mineralogical components of the slag -wollastonite, fayalite, and olivine -have a melting point of 1200-1300~In addition, bank slag has a higher bulk density than crushed rock (1.8 versus 1.55 kg/m3). It is thus more resistant to the thermal and chemical action of the furnace slag and metal before the metal subsides to a level below the main sills.In trial heats, we visually evaluated the condition of the sills and studied the effect of dissolving bank slag on the process of refining the steel to rid it of harmful impurities -sulfur and phosphorus. It was established that the sills made of slag have the necessary service properties and reliably prevent "escape" of the pig iron and slag from the furnace. On the two-bath furnaces, the degree of wear of sills made of slag was the same as for sills made of crushed limestone. This can be attributed to the rapidity of the process (the time from the beginning of the hot-metal addition to the beginning of tapping averaged 2.5 h) and the fact that a source of heat energy was located inside the bath -in the region where oxygen was injected into the molten metal.In the open-hearth fnmaces, some melting of the slag sills was observed before the end of the heating period. Wear was especially noticeable in the sill of the working door, where the molten pig iron is charged. The sills had to be partially rebuilt in certain heats, as they do when cmshed limestone is used (particularly for the sill of the middle charging door).

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Use of steelmaking slags

Cited by 4 publications

References 0 publications

Development of Technology of Release of Iron and Its Oxidic Connections from Dump Steel-Smelting Slag

Development of Technology of Release of Iron and Its Oxidic Connections from Dump Steel-Smelting Slag

Nonwaste Recycling of Nonferrous Metallurgy Slags in Iron Casting

Use of bank slags to form sills

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