Dry centrifugal granulation technology is an important mean for liquid high temperature slag In this paper the numerical simulation of dry granulation process was carried out to analyze the
Schematic diagram of full chain slag utilization system The blast furnace slag with full utilization of waste heat was crushed and sieved by ball mill which was convenient for subsequent leaching reaction Treatment of molten slag by dry granulation technology a Granulation of molten slag process; b the particles morphology of slag
observation of the slag granulation process That is the mechanism of slag granulation was first observed exper imentallyusingahigh speedvideocameraandwasthenused as the basis of this model in which the influence of the rotating speed of the disk on the diameter of slag was mainly examined for this model an unsteady state heat
Our dry slag granulation technology transforms molten slag from steel furnaces into granules using air stream eliminating the need for The flexibility of the process allows obtaining granules of different sizes and with different ratio between crystalline and amorphous phases to respond at the request of the final innovative process integrates seamlessly into
Download scientific diagram Dry slag granulation at a spinning disc Key Results/Findings A conceptual flowsheet has been developed in the 1 st year by June 2007 of the project based on process
J Serb Chem Soc 83 0 1 15 2018 UDC JSCS 6280 Original scientific paper 1 Study on mineralogical crystallization of granulation of gas quenching blast furnace slag KANG YUE1 LIU
slag through pilot scale granulation and mathematical simulation The mineralogical composition of the modified BOF slag after granulation are characterized The critical cooling rate to vitrify the slag is obtained through the calculation combined with the measured TTT diagrams A mathematical model is developed to quantitatively determine
widespread attentions In this paper the water quenching and dry granulation processes were discussed in detail After a thorough comparative analysis of various treatment technologies it can be concluded that centrifugal granulation affiliated with dry granulation is the optimum process with smaller slag particle size about 2mm more
Download scientific diagram XRD patterns of samples from slag reduction AS 1 3 sample contained in graphite crucible SiMgO 1 2 sample contained in MgO crucible from publication
900 1200 1500 1800 2100 Fig 3 shows the XRD patter of obtained slag particles for different rotary speed According to the XRD of water cooling slag it exits obvious diffraction peak curve
The three largest granulated slag fractions are very similar The overall C 2 S content is the same 41 to 44 wt% but the β C 2 S content in the granulated converter slag increases with increasing granulated slag size fraction while the α H C 2 S decreases from 28 to 22 wt% This is likely an effect of the slower cooling of the larger slag fractions which allows
Currently molten slag water quenching process is adopted for slag resourceful disposal neglecting waste heat recycling and environmental burdens such as sulfur dioxide or hydrogen sulfide formation [4] By contrast dry granulation is an environment friendly process reconciling molten slag waste heat recovery and slag resourceful disposal in which the
slag mass flow rate and slag initial temperature on the granulation characteristics in film formation mode are still unknown In the present study granulation was maintained in film formation mode The fragmentation phenomenon of film was investigated and the effects of rotating speed molten slag mass flow rate and slag initial temperature
Download scientific diagram Schematic diagram of high temperature experimental set up for centrifugal granulation of molten slag metal mixture using a spinning cup from publication
Continuous cooling transformation CCT diagram The CCT diagrams of the slag were obtained by continuously cooling the samples at different rates and recording the start time of the crystallization The CCT diagrams for the five slag compositions NBO/T = are presented in Fig 17 a e
Carbide slag is a solid waste generated during acetylene production mostly not exceeding 200 μm mainly composed of Ca OH 2 Using carbide slag as a flux for iron ore sintering is a promising utilization method The effect of moisture on the granulation and sintering process of sinter mixtures with carbide slag as a flux was studied in this
In stainless steel production slag from argon oxygen decarburization AOD converters is dumped on to the ground and then slowly cooled The slag undergoes phase transformation from β dicalcium silicate β C2S to γ dicalcium silicate γ C2S at approximately 500 °C to 450 °C resulting in slag volume expansion disintegration and dust generation The
182 Journal of Sustainable Metallurgy 2019 5 181 194 1 3 suchasairblasting rotarydrum s andspinningdisc/
The slag granulation plant comprises three sections for granulation dewatering and storage In the granulation section the liquid slag is quenched by pouring onto it an excess water stream The evaporated water will be condensed in a condensing tower located above the granulation tank This proven granulation process ensures economic
Governing Equations of Molten Slag Flow and Granulation on a Rotary Disc The DCG process of molten slag is simulated with a three dimensional simulation program which is based on the VOlume of Fluid VOF scheme 12 In this scheme the fluid flow including molten slag and surrounding gas is described by the momentum and continuity equations and the transient
The slag is a by product of steel industry Experimental trials of dry granulation process have been widely performed to granulate Blast Furnace BF slag in addition to heat recovery from
The air granulation of BOF slag provides a promising way to recover heat from the slag that has a tapping temperature between 1250 and 1700 °C [36] The current industrial practice is pouring steel slag into large pits and cooling it with a continuous water stream By juxtaposing the early stage hydration as well as the cement slag
Schematic diagram of full chain slag utilization system The blast furnace slag with full utilization of waste heat was crushed and sieved by ball mill which was convenient for subsequent leaching reaction Treatment of molten slag by dry granulation technology a Granulation of molten slag process; b the particles morphology of slag
Since the 1970s research on dry granulation of blast furnace slag with waste heat recovery has been carried out to improve energy efficiency and overcome the environmental problems caused by traditional slag treatment methods in the iron and steel industry Duan et al 2022a Duan et al 2022b Dry granulation with waste heat recovery technologies includes the
