Determination of Abrasiveness in Copper-Gold Sulfide …
Abrasion is the most common wear mechanism in ore mining and mineral processing operations [1,2,3,4,5,6,7,8]. Albertin and Sinatora [ 2 ] pointed out the relationship between the abrasiveness of minerals and the wear of metal surfaces when their investigations showed that high-chromium white cast iron mill balls underwent …
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Iron Ore Characterization Techniques in Mineral Processing
Additional physical quantities, namely the tumbler index (TI), abrasion index (AI), and shatter index (SI) that define the resistance of the ore to breakdown during various stages of different ore processing operations and transportation were also determined . While TI of greater than 70% is desired, AI should be less than 5% to …
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(PDF) Optimization of pelletization process for iron ore …
Iron ore fines utilized in pellet making consist of alumina in the range of 3.20–3.35% and LOI in the range of 3.50–3.70%. Detailed palletization studies have been carried out on high alumina ...
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Chemical, Mineralogical and Metallurgical …
A moderate quality of sinter can be produced from the goethitic iron ore fines. The sinters produced with basicity 1.80 yield an optimum combination of physico-chemico and metallurgical properties due to highest SFCA, 52.602% and lowest fyalite, 2.185% which certainly accepted and required by any blast furnace.
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Table of Bond Work Index by Minerals
This Table of Ball Mill Bond Work Index of Minerals is a summary as tested on 'around the world sample'. You can find the SG of each mineral samples on the other table. Source 1. Source 2. Source 3. Source 3. Source 4.
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Characterisation of the Physical and Metallurgical …
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Iron Ore Characterization Techniques in Mineral …
WEBAdditional physical quantities, namely the tumbler index (TI), abrasion index (AI), and shatter index (SI) that define the resistance of the ore to breakdown …
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IS 11093 (2001): Iron Ore Lumps for Direct Reduction …
6.1 The reducibility of the iron ore lumps shall be 0.5 percent per minute minimum, (dR/dt at 40 percent reduction), when determined by the method specified in IS 8167. -.-J. 6.2 The relative reducibility of the iron ore lumps at the end of 3 h shall be 55 percent, minimum when determined as per the method given in IS 11292.
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Tumbler Index
The Tumbler Index is a relative measure of the resistance of the material to breakage or degradation by impact. (ii) Abrasion Index: It is a relative measure the degradation of iron ore by abrasion. The Tumbler Index and Aibrasion Index are determined in a tumbler test apparatus as per the Bureau of Indian Standard No. IS:6495 .
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Iron Ore Pellet Dustiness Part II: Effects of Firing Route and Abrasion …
Effects of abrasion index on the dustiness of iron ore Downloaded by [Van Pelt and Opie Library] at 10:37 12 October 2017 pellets. Only pellets with AI <5% are shown. The abrasion Fig. 9. Cross-sectional micrographs of iron ore pellets at high index was defined as the quantity of 0.5-mm fines produced and low levels of abrasion index …
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Surface breakage of fired iron ore pellets by impact
Experimental studies on attrition and dust generation of iron ore pellets have included the tumbler test used to calculate the Abrasion Index, which is a test suggested by the International Organization for Standardization (ISO3271: 2007) and routinely used by pellet producers in the quality control of iron ore pellets [17]; dust towers [8] and ...
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CHARACTERIZATION OF PROPERTIES AND REDUCTION …
through 0.5 mm screen represented its abrasion index, while the % weight of iron ore retained on 6.3 mm screen was taken as its tumbler index. 2.3.2 Shatter index In shatter test, a dried lump iron ore sample (10 kg) of size —40 + 10 mm was dropped four times from a height of 2 m on a cast iron floor. The iron ore was then screened and the ...
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Characterisation of the Physical and Metallurgical Properties of
The physical prop- natural iron ores from the different Muko ore deposits are erties of the ore were studied by determining their tumble, given in Table 1. The limit values of the Tumble Index (TI) abrasion, and shatter indices as well as their apparent and Abrasion Index (AI) for the iron ore pellets used in porosity.
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Chemical, physical, thermal, textural and …
The iron ores were found to have excellent physical properties exemplify with tumbler index (82 wt%–91 wt%), abrasion index (1.27wt%–4.87 wt%) and shatter index …
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Determination of Abrasiveness in Copper-Gold Sulfide …
Keywords: abrasiveness; geometallurgy; iron oxide-copper-gold ore; Bond abrasion test; LCPC 1. Introduction Abrasion is the most common wear mechanism in ore mining and mineral processing ... [2,4–7,11]. The outcome of this test is the Bond abrasion index (Bond Ai), which finds
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Characterisation of the Physical and …
and Abrasion Index (AI) for the iron ore pellets used in. furnace reduction process are > 70 wt% for the TI value. and < 5 wt% for the AI value [2]. It follows from Ta b l e 1.
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Table of Bond Work Index by Minerals
This Table of Ball Mill Bond Work Index of Minerals is a summary as tested on 'around the world sample'. You can find the SG of each mineral samples on the other …
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CHAPTER
iron ore. Fig. 3.3 : Effect of size of ore on degree of reduction. Iron ore and agglomerates as charge material should be resistant to abrasion. If they break into finer fractions due to impact, abrasion, compression and volume change within the furnace, the smaller particles result in choking of voids thereby affecting reduction and productivity.
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Study and Implementation of Quality Improvement …
cold crushing strength of iron ore pellets. Keywords: Abrasion Index, Porosity, Tumbler Index, Blaine Number I. INTRODUCTION Iron orepelletization is a process of agglomerating iron ore concentrate produced by benefi ciating low grade iron ore. Looking at the current scenario of iron ore availability in India,
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ENGINEERING NATIONAL INSTITUTE OF TECHNOLOGY, …
The Tumbler Index is a relative measure of the resistance of the material to breakage or degradation by impact. (ii) Abrasion Index: It is a relative measure the degradation of iron ore by abrasion. The Tumbler Index and Aibrasion Index are determined in a tumbler test apparatus as per the Bureau of Indian Standard No. IS:6495 .
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Quality requirements of iron ore for iron production
Inside a BF, iron ore is reduced in three stages from mainly Fe 2 O 3 to Fe through Fe 3 O 4 and FeO. As mentioned earlier, there is about a 20% volume increase …
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Quality requirements of iron ore for iron production
Inside a BF, iron ore is reduced in three stages from mainly Fe 2 O 3 to Fe through Fe 3 O 4 and FeO. As mentioned earlier, there is about a 20% volume increase in the reduction of Fe 2 O 3 to Fe 3 O 4 due to the transformation of crystal lattices. ... Abrasion index, % ...
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A New On-Line Method for Predicting Iron Ore Pellet …
The Abrasion Index (AI) describes fines generation from iron ore pellets, and is one of the most common indicators of pellet quality. In a typical pellet plant, dust is …
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Gouging abrasion test for rock abrasiveness testing
A Gouging Abrasion Index (Gi) is introduced, which can be used for prediction and assessment of component life expectancy and efficiency of mineral processing and materials handling equipment. ... As was shown by the results of Gouging Abrasion and Cerchar testing of iron ore, copper ore, and basalts carried out by the …
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Definition and Assessment of Coal Abrasivity | Power
On average, the abrasion index for a population of coals decreases upon reduction in ash content, density, iron content and an increase in grindability and oxygen content. Article PDF. Download to read the full article text Similar content being viewed by others. Reducing the carbon footprint of buildings using biochar-based bricks and ...
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Table of Bond Abrasion Index for Varied Minerals …
The Bond Abrasion Test determines the Abrasion Index, which is used to determine steel media and liner wear in crushers, rod …
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Using Rock Geomechanical Characteristics to Estimate Bond Work Index
Geometallurgical modeling of the production benches is an attempt to estimate the geometallurgical variables of the different ore domains, which leads to a better understanding of the ore and its properties. Having geometallurgical variables results in a more accurate prediction of ore characteristics, an improved drilling and blasting …
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(PDF) Iron Ore Sintering: Quality Indices
Sinter quality requirements. Diagram ΔG°/T for the iron phases in the Fe-O system. (1) ΔG° of the Fe 3 O 4 (2) ΔG° of the FeO (3) ΔG° of the Fe 3 O 4 obtained from the FeO (4) ΔG° of the ...
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Direct reduced iron — Determination of the tumble and …
direct reduced iron to size degradation by impact and abrasion. This International Standard specifies the determination of the tumble and abrasion indices of hot briquetted iron …
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Development and application of a novel fluxing compound …
Good sinter quality is necessary for efficient BF operation which depends on iron ore quality and i... Blast furnaces (BF) ferrous burden consist of sinter (>50%) with rest being pellets and lump ore. ... sinter feed improves the Tumble index by 4.7 points, lowers the Abrasion index by 2.7 points, and decreases the return fines by 4.4% ...
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ISO 11323:2010(en), Iron ore and direct reduced iron
b) the abrasion index is a relative measure of the resistance of lump ore (3.3), agglomerates (3.8) or hot briquetted iron (4.3) to size degradation by abrasion, referred to as AI and expressed as the percentage by mass of the −500 μm fraction generated in the test portion (5.7) after tumbling.
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