These will yield 19.4 million tonnes of concentrate containing 59% iron. The ironsands contain a fair amount of ordinary sand or silica. The iron-rich, magnetic titanomagnetite sand is concentrated from this by means of gravity and magnetic separation.
Under this consideration, a concentrate must contain at least 20 oz/t of gold. Obviously, if the higher grades are better and 50 oz/t is a good average value. It is important to mention that a silver-gold concentrate obtained by flotation has a high silver content. For example a concentrate assaying 1400 oz/t Ag and 8 oz/t Au can be …
This study is to investigate and clarify the details about mineralogical characteristics of iron sand used for Japanese classical iron-making furnace "Tatara", that produces different …
0.2% Zn max and up to 0.2% Cu are allowed in iron-ore part of the blast furnace burden for the ... The obtained iron concentrate reaches 64.28% Fe and 0.42% S respectively with iron recovery of 53 ...
Currently, electric furnaces and blast furnaces are used to process iron sand concentrate or titanomagnetite to produce pig iron and titanium slag. The titania content in the slag...
The iron ore industries of India are expected to bring new technologies to cater to the need of the tremendous increase in demand for quality ores for steel making. With the high-grade ores depleting very fast, the focus is on the beneficiation of low-grade resources. However, most of these ores do not respond well to the conventional …
The titania content in the slag ranges from 10 to 25 mass% of blast furnaces and 30 to 35 mass% of electric furnaces. The low titania content in the slag is due to the addition of flux, some iron oxide must be retained in the slag to adjust the viscosity of the slag and the mixing of iron sand concentrate with ordinary iron ore.
The results reveal that achieving metallic iron by using a conventional muffle furnace takes 120 hours at 1600ºC, whereas by using a microwave sintering furnace it took only 24 Hrs.
The test results indicate that it is possible to smelt a sand concentrate containing 53o0 pct Fe and 4.4 pct Ti02 to yield pig iron, while slagging-off the titania in the easiest and most economical manner. ... furnace, the use of iron sands by the Japanese nearly ceasedo 'lben, in 1938, Japan reopened her iron-sand mines as the country began ...
Theoretical calculations and experimental studies were used to investigate a process involving the evaporation, condensation, and separation of blast furnace dust with vacuum carbothermal reduction.The theoretical calculations revealed that the removal rate of metallic zinc from blast furnace dust by vacuum carbothermal reduction was> 99.6%, …
@article{Zhang2011PreparationOH, title={Preparation of high performance blended cements and reclamation of iron concentrate from basic oxygen furnace steel slag}, author={Tongsheng Zhang and Qi-jun Yu and Jiangxiong Wei and Jianxin Li and Pingping Zhang}, journal={Resources Conservation and Recycling}, year={2011}, volume={56}, …
During the flash ironmaking process, fine iron concentrate and flux powder, accompanied by reductive gas, are injected into a flash furnace. In the process of falling into the furnace, the fine iron concentrate is heated and drastically pre-reduced by the high-temperature reductive gas within a few seconds of flight time. Then the final ...
Graphical abstract. Basic oxygen furnace steel slag (BOFS) has not yet been widely used as a cementitious material due to low cementitious activity and poor soundness. Through the approach proposed, BOFS was separated into iron concentrate (about 60% Fe 2 O 3) and residual slag product (consisting mainly of hydraulically active …
Direct reduction iron and titanium concentrate were produced. •. Calcium fluoride reduced the liquidus temperature and viscosity. Abstract. Reduction roasting …
Iron concentrate, containing about 60% Fe2O3, can be reclaimed from BOFS through a new approach proposed. ... "Preparation of high performance blended cements and reclamation of iron concentrate from basic oxygen furnace steel slag," Resources, Conservation & Recycling, Elsevier, vol. 56(1), pages 48-55. Handle: …
The concentrate carries from 63 to 64 per cent. iron and 0.008 per cent. phosphorus; the middling product carries 40 per cent. iron, and the tailing from 5 to 6 per cent. iron. Dust is withdrawn from the separator by a fan, and after settling in a dust chamber, is sent to the waste dump.
Currently, electric furnaces and blast furnaces are used to process iron sand concentrate or titanomag- netite to produce pig iron and titanium slag. The titania content in the slag ranges from 10 ...
1. Introduction. Blast furnace dust (BFD) is a by-product of the iron-making process; it is carried by solid particles and vaporization, and is collected by a variety of mechanisms, including gravity dust collectors and bag filters (Gu and Deng, 1997; Zeydabadi et al., 1997).It contains many ferrous and nonferrous metals, such as zinc (5 …
Effect of distribution of iron concentrates between pelletized and matrix feed on the preparation of blast furnace burdens from two different kinds of fine iron concentrates (magnetite and hematite) by composite agglomeration process (CAP) was explored. It was found that when the mass ratio of iron concentrate A (magnetite) to …
The smelting process comprises the carbonaceous reduction of ilmenite to produce titania slag with a TiO2 content of 86%, and iron with a carbon content of 2.5%. The Namakwa Sands smelter, situated near the Saldanha Bay harbour, commenced smelting operations in 1994, when a 25 MW DC-arc furnace was commissioned.
Iron Concentrate is created by purifying Crushed Iron Ore. This can be done in one of two ways: either dry or wet purification, each of which can be performed using one of two crafting stations. The crafting stations come with different ratios, labor cost and time. The process to make Iron Concentrate also gives a by-product of either Tailings or Wet …
The metallurgical properties of blast-furnace ore and ore-coal extrusion briquettes (BREX) based on hematite iron ore concentrate are studied. With respect to values of hot strength brex occupy an intermediate position between sinter and pellets. The reduction capacity for brex is significantly reduced with simultaneous addition of flux and …
Preparation of high performance blended cements and reclamation of iron concentrate from basic oxygen furnace steel slag. Tongsheng Zhang, Qijun Yu, Jiangxiong Wei, Jianxin Li and Pingping Zhang. Resources, Conservation & Recycling, 2011, vol. 56, issue 1, 48-55 . Abstract: Basic oxygen furnace steel slag (BOFS) is a by-product of steel-making …
Iron ore concentrate is an output product from processed iron ores that have been milled (crush, grind, magnetic separation, flotation) to separate deleterious elements and produce a high-quality product. ... The development of blast furnace smelting technology with a high proportion of pellets is an important means for improving the ...
Compared with traditional magnetizing roasting technologies, this novel technology has the following advantages: firstly, the oolitic hematite is dynamically …
Iron concentrate with 58.72% iron grade is obtained from the magnetic separation, and the iron recovery is 89.32%. ... was dried and reduced in the shaft furnace. The iron concentrate was obtained from siderite-magnetizing roasting using low-intensity magnetic separation with shaft furnace gas as the fuel and reducing agent in the former ...
Section snippets Raw materials. The titanium-bearing iron sand is taken from New Zealand, and its chemical compositions are listed in Table 1. The total Fe (TFe), TiO 2 and V 2 O 5 contents are 57.22%, 8.00% and 0.54%, respectively. The other main components include SiO 2, MgO, and Al 2 O 3.As shown in Fig. 1, the main phase …
Abstract. Theoretical calculations and experimental studies were used to investigate a process involving the evaporation, condensation, and separation of blast …
Chemical leaching of this concentrate, by using HCl and stannous chloride at 50-60°C, led to the production of ultra-pure sand concentrate having 0.0043% Fe 2 O 3. Fused silica was prepared using ...