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Converter slag is produced during the conversion of pig iron into steel in a basic oxygen furnace. For this reason, it is also called BOF-Slag or LD-slag after the Linz-Donawitz process 12. On average 126 kg converter slag is produced per ton of steel 3, with worldwide steel production of 1.8 Mt in 2019 4.
The converter slag obtained from Jinan steel plant was studied. After grinding, the slag contained 3.3 of iron particles, 54.84 of magnetic part TVe 20, and 41.84 of non-magnetic part ...
3.4 Mechanical analysis on steel slag mud at different grinding durations. Figure 7 illustrates the compressive strengths of the prepared filling material at different grinding durations. It can be seen that, with the growth in grinding duration, the steel slag mud became increasingly fine.
Slags originate from various stages in the iron and steel making process, e.g. blast furnace, converter, basic oxygen furnacebasic oxygen steelmaking BOFBOS, electric arc furnace, or ladle. Slag has a double role it permits removal of the gangue and allows exchange reactions with the liquid metal, permitting control of the process to keep ...
FIELD nickel and cobalt metallurgy, in particular, processing of return converter slag of nickel-cobalt production. SUBSTANCE method involves providing mixed charging into shaft furnace of burden containing agglomerate, coke, mixture of lime with pyrites, return converter slag smelting for producing of nickel material and waste slag introducing return converter slag into burden in the form ...
In experiments to test the efficiency of grinding aids according to the invention in the grinding of granular blast furnace slag, test grinds were made in a laboratory batch mill. In the experiments, 3500 g sample A or 3400 g sample B of granular blast furnace slag -20 mesh were ground along with various percentages 0.02-0.04 percent ...
After re-grinding and floating again, the highest recovery cumulative obtained was 92.2 which represented a significant improvement in the copper recovery. The best flotation performance was obtained with the reagent FC 4146 which contains thionocarbcarbamate and methyl isobutyl carbinol as a ... Table 7.1 Converter slag results Phase 1 ...
Anhui Yuntian Metallurgy Technology Co., Ltd., Experts in Manufacturing and Exporting Slag Dart, Slag Dart Machine and 216 more Products. A Verified CN Gold Supplier on Alibaba.com.
The invention discloses a slagging constituent for semisteel converter steelmaking and a preparation method thereof, wherein the slagging constituent for semisteel converter steelmaking comprises the following compounds in percentage by weight 45-55 of SiO2, 2-8 of CaO, 5-15 of Al2O3, 2-8 of MnO, 5-15 of MgO, 5-10 of FeO and 10-20 of Fe2O3 the manufacturing method thereof
The use of slag from a LD converter together with blast furnace slag for the purpose of common sintering is known from DE-PS 16 46 685. It was already proposed in DE-OS 26 11 889 to subject smelter waste together with lime to an oxidizing smelting, after which the finished melt may be quenched to a granulate, and, finally, the granulate can be ...
Slag is the glass-like by-product left over after a desired metal has been separated i.e., smelted from its raw ore.Slag is usually a mixture of metal oxides and silicon dioxide.However, slags can contain metal sulfides and elemental metals. While slags are generally used to remove waste in metal smelting, they can also serve other purposes, such as assisting in the temperature control of ...
The change of the specific surface area, particle size and activity index of ground granulated blast furnace slag under different grinding conditions is researched based on closed-circuit mill in the paper. The research shows that the grinding effect is greatly different with the different grinding body, and proper pre-grinding time can help to improve the grinding effect.
Slag Processing Plant,Steel Slag Grinding Mill,Slag Crushing Plant. The steel slag is a kind of solid waste in the industrial use. According to the type of steel converter, the steel slag can be divided into varied types, in general Please contact us through Live Chat to get price quotation and more info.
and converter slag which contain 0.5-2 Cu and 2-8 Cu, respectively. The following three methods are generally utilized for recovering the copper from these slags on an industrial scale i recycling of the converter slag to the smelting furnace, ii cleaning of smelting andor converter slags in electric furnaces and iii flotation.
In another preferred embodiment, the initial grinding of the slag is carried out as a semi-autogenous grinding operation and leads to a fairly coarse pulp although suitable for flotation in a unit cell with an appropriate frother and collector. Typically, the grinding proceeds until about 80 of the pulp passes a 100 mesh screen.
Copper slag blasting ediagrit - is manufactured of the granulated slag of copper refineries, and used for blast-cleaning of metal surface. Copper slag has also gained popularity in the building industry for use as a fill material. Contractors may also use copper slag in place of sand during concrete construction.
Abstract. Aiming at the recovery of copper from smelting slag, a flotation approach was studied. It was found that this slag composed of fine particles with complex association and distribution, in which bornite was the main copper-bearing mineral after a detailed mineralogy analysis via
From crushing, grinding, and pulverizingthere is a lot of industry terminology out there, and it can be confusing. To help pair your project with the correct machine for your application, the Williams Patent Crusher team made this handy, downloadable particle size conversion chart for mesh to
Feb 11, 2020 Mechanical grinding and polishing It is recommended that plane grinding is carried out with the finest possible grit in order to avoid any excessive mechanical deformation. Hardness, size and number of samples have to be taken into account, but even with larger samples of pure copper, plane grinding with 500 SiC FoilPaper is sufficient.
Zhao X, Chen KM, Wang JD 2011 Application of KHM type horizontal roller mill in steel slag grinding system. Paper presented at 2011 Annual Meeting of China cement technology and the Thirteenth National Conference on Cement Technology,pp 96101. Chinese Society of Silicate Yichang, 2629 October 2011 Google Scholar
The steel slag used was the converter steel slag with 1.5 f-CaO by mass. Figure 1 shows the particle size distributions of the cement and steel slag powder. The X-ray diffraction XRD patterns of the steel slag are shown in Figure 2. The major chemical components of the cement and steel slag are shown in Table 1.
The necessary grinding of the slag to the finenesses required for cement is now mostly performed in vertical mills Fig. 7, which achieve throughputs of over 100 th 2. Of the 16.3 Mta of steelworks slag in Europe, 52.3 are BOF slag, 34.9 are EAF slag and 12.6 are other types of steelworks slag.
Alibaba.com offers 1,034 steel slag blasting products. About 2 of these are Refractory, 0 are Other Metals amp Metal Products, and 0 are Steel Scrap. A wide variety of steel slag blasting options are available to you, such as composition, application, and shape.
Mar 02, 2018 Because of the high hardness and poor wear resistance of steel slag, the potential cementing property of steel slag can not be effectively exerted, and the utilization rate of steel slag. Is low. In order to improve the performance and grinding efficiency of steel slag powder, different grinding aids were added in the process of steel slag grinding in laboratory and production line respectively.
slag dore flotation grinding slurry Prior art date 1981-11-10 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. Expired - Fee Related Application number US06334,897 Inventor Peter W. Godbehere
A few of them are, The first auto kiln control system based on fuzzy logic in India, The worlds largest cement and slag grinding Vertical Roller Mill during 1997,The second such Cement Vertical Roller Mill during 2001, The third Cement Vertical Roller Mill again with 60 additional capacity and first in
The total operation includes 11 integrated plants, one white cement plant, one clinkerisation plants, 15 grinding units, two rail and three coastal terminals, and 101 ready mix concrete RMC plants. Additionally, the company is the largest clinker exporter in India. PowerPoint PPT presentation
Nov 18, 2017 Having spent more than 40 years in steelmaking, I think I am qualified to answer this question but WIKIPEDIA has already done a fine job of answering it. WIKIPEDIA defines steel plant slag as Basic slag is a co-product of steelmaking, and is t...
The project to be undertaken will aid in the replacement of a conventional practice of pyrometallurgical treatment of a semi-waste product converter slag Converter slags contain up to 3 of No, Co and CU, and are generated in large quantities making it uneconomical to leave the metals unrecovered. The conventional technology for metal recovery results in technological and environmental ...
During reduction of converter slag in an electric furnace it is possible to form two different phases one metallic and other nonmetallic0i. Slag powder is properly mixed with graphite powder and melted in an electric arc furnace. The less stable oxides like Fe,0,, FeO and P,05 are
The invention relates to ferrous metallurgy, specifically to the oxygen Converter process. A known method of steelmaking BOF 1, including the charging of scrap, loading slag-forming materials, pouring the liquid cast iron, blowing the bath with oxygen input during purging of lime and other slag-forming materials and fluxes, production of metal and slag.
This eliminates the grinding of the mixture during its transportation in the Converter due to the hardening of the pieces of lime,giving the possibility of processing of cast iron with a low content of manganese is achieved by for acceleration of slag formation in the first period of purging the role of additives manganese perform the oxides of ...