— Research was сarried out on a pilot plant on sintering of various size siderite ore and limonite taken in various ratios. To study impact of a number of process factors on the sintering process performance and the obtained agglomerate quality at the minimum number of the carried out experiments, one of the experiment planning methods was …
There exist complex chemical reactions and phase transition processes—melting and solidification—in the iron ore sintering process. This will result in bed shrinkage and has an important impact on the sintering process and sinter properties. Numerical simulation was carried out in this paper, and it is based on the porous medium and double-energy …
— Iron ore sintering means mixing the iron ore powder, iron scrap, fuel, and solvent in a certain proportion and igniting the fuel to soften or melt some mixture particles.
— Siderite is both an iron ore and gangue mineral. Its principal economic value lies in its high iron content and the absence of process contaminants such as sulfur or phosphorous. It is part of a large group of isomorphous minerals, the calcite group carbonates, which share similar physical properties, and rhombohedral crystal form. ...
— There is 32. 45% Fe in iron ore from Donganshan Sintering Plant. The ore has the characteristics of poor iron and high silicon, main iron ore is hematite, main gangue mineral is quartz, there is ...
Zinc processing - Ores, Refining, Alloying: Zinc ores are widely distributed throughout the world, although more than 40 percent of the world's output originates in North America and Australia. The common zinc-containing minerals are the zinc sulfide known as zinc blende or sphalerite (ZnS), a ferrous form of zinc blende known as marmatite [(ZnFe)S], and a …
— Two technologies are considered for the preparation of solid fuel used in sintering: crushing with portions of roasted siderite ore whose strength is less than that of the fuel; or crushing of the fuel alone and subsequent mixing with the ore portions.
Nitrogen oxides in iron ore sintering2.1. Emission characteristics. It has been determined that it is almost impossible to replicate technologies of low NOx combustion from other industries for iron ore sintering. Sintering is distinct from a coal-fired furnace, as it involves the three-way coexistence of gas, solids, and liquids.
The catalytic denitrification of sintered ore, the effect of double-layer ignition sintering process on the emission reduction in nitrogen oxides, and the impact on the quality of sintered ore ...
— Mining operations usually provide ore of varying characteristics. At the Donganshan Sintering Plant, the ore is a low-grade, complex, hard-to-separate carbonate containing iron ore, and a two-step flotation circuit was previously developed to overcome the negative impact of the carbonates on the reverse flotation process. However, with …
— Solid phase sintering and melting of the materials are limited to the cooling zones and proceed to no more than take place more than 1–3% completion. ... The existing technology for roasting siderite ore ensures that the shaft furnaces will have a productivity of 10.5–11.5 tons ore/h and will yield 7.9 tons of roasted product per hour with ...
— A method of preparing siderite ore that expands its applicability in sintering is considered. The results are of great practical importance, since they permit optimal preparation of such ore so as ...
— May Concentrate Iron ore, as a refractory iron concentrate, deteriorates the permeability of the sintered layer during the sintering process due to its fine particle size and poor granulating performance. Therefore, it cannot be widely used in iron ore sintering. In this study, the strengthening granulation of May Concentrate Iron ore using pre …
Optimization of Siderite Ore Sintering Operation Conditions. Abstract: Research was сarried out on a pilot plant on sintering of various size siderite ore and limonite taken in various …
Meanwhile, C/Fe mass ratio was elevated to 2.50 in the direct reduction of siderite to generate semi-coke as by-product, which contained 76.11% fixed carbon. Based on the characterization of the semi-coke, it can be used as solid fuel in the iron ore sintering to replace coke breeze and cut production cost.
— Semantic Scholar extracted view of "An efficient process to upgrade siderite ore by pre oxidation-magnetization roasting-magnetic separation-acid leaching" by Dingzhen Wang et al. ... as a refractory iron concentrate, deteriorates the permeability of the sintered layer during the sintering process due to its fine particle size and poor ...
— Abstract. Addition of small amounts of calcium and magnesium chlorides to the sinter charge of siderite iron ore, to minimise the percentages of harmful elements such as Pb, Zn, Cu, Sb and As was successfully performed.
— Abstract. Sintering is the most economic and widely used agglomeration process to prepare iron ore fines for blast furnace use. Owing to the depleting reserves of traditional high grade iron ore, there …
— Siderite (FeCO3): Siderite is a carbonate iron ore mineral that is typically brownish-yellow to grayish-white in color. It often forms as a result of hydrothermal processes or weathering of other iron-bearing minerals. ... such as pelletization or sintering, to create iron ore pellets or sinter, which are used in blast furnaces to produce iron ...
iron ore resources, siderite ore is abundant in China with proven reserve of 1.83 billion tons, occupying 14% of total iron ore reserves.1,2) However, siderite is refractory to ben- ... it can be used as solid fuel in the iron ore sintering to replace coke breeze and cut production cost. The integrated process provides an attractive way to ...
Two technologies are considered for the preparation of solid fuel used in sintering: crushing with portions of roasted siderite ore whose strength is less than that of the fuel; or crushing of the fuel alone and subsequent mixing with the ore portions. On the basis of derivatographic data, kinetic equations are written for the high-temperature combustion …
In Russia and elsewhere, siderite ore is used in roasted form or as sinter. After roasting in shaft fur-naces, the strength of the siderite ore is decreased [1‒6]. Therefore, sintering is an important approach to preparing such ore for blast-furnace use [7–11]. The method of solid-fuel preparation has considerable influence on the sintering ...
— Table of Contents The authors investigate the influence of the basicity index CaO/SiO2 on the sintering properties of hematite ore mixtures. The experimentation was performed with three different mixtures of ores from Tazadit, Nimba, Mano-River, Itabira, Marcona, Goa, Mapawa and Cassinga. Increasing the basicity index CaO/SiO2 between …
— Iron Ore Sintering: Quality Indices. D. Fernández-González Grupo de Investigación en Siderurgia, Metalurgia y Materiales, Escuela de Minas, ... Sinter plants process a mixture of iron ore fines, recycled ironmaking products, slag-forming agents and solid fuel (coke) with the finality of obtaining a product with the suitable characteristics ...
The consumption of siderite ores of the Bakalskoye deposit can be increased by replacing some of the relatively high-magnesia Bakalsky concentrate (a mixture of roasted siderite …
— In the present study, calcination properties of Hekimhan-Deveci siderite (FeCO3) ore and the effect of calcination process before the pelletization on strength of pellet were investigated and evaluated. Two different calcination processes were followed. One of them is the traditional calcination process and the other one is microwave …
A method of preparing siderite ore that expands its applicability in sintering is considered. The results are of great practical importance, since they permit optimal preparation of such ore so as to obtain sinter with satisfactory metallurgical properties.
Samples of siderite ore and limonite (size classes 0–16, 0–12, and 0–8 mm) are prepared in order to refine the sintering of siderite order and study the influence of various parameters on the sintering pro cess and the final sinter quality. Roasted siderite ore (size class 0–8 mm) is also used. Table 1 presents the
— Sintering is a process by which a mixture of iron ores, fl uxes and coke is agglomerated in a sinter plant to manufacture a sinter product of a suitable composition, quality and granulometry to be ...
