Consumption of steel grinding media in mills – A review

Aldrich, Chris

doi:10.1016/j.mineng.2013.04.023

Cited by 69 publications

(30 citation statements)

References 67 publications

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“…The wear of crushing and grinding media corresponds approximately to 50 per cent of process costs in these operations (Radziszewski, 2002;Aldrich, 2013).…”

Section: Introductionmentioning

confidence: 99%

Revisiting gouging abrasion test for jaw crushers

Pintaúde

Bartalini²

2018

REM, Int. Eng. J.

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The use of a gouging abrasion test to evaluate the wear of jaw crushers is revised in terms of its procedures, considering the effects of the most significant variables, such as the minimum amount of crushed material and the minimum opening between the jaws during the crushing cycle (minimum discharge aperture). A correlation between the work hardening of jaws and the amount of crushed material is presented. The wear of stationary and movable jaws is compared, being the results dependent on the jaw's material and the discharge aperture. The abrasiveness of several rocks was evaluated, showing a good correlation with their Mohs hardness.

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“…The wear of crushing and grinding media corresponds approximately to 50 per cent of process costs in these operations (Radziszewski, 2002;Aldrich, 2013).…”

Section: Introductionmentioning

confidence: 99%

Revisiting gouging abrasion test for jaw crushers

Pintaúde

Bartalini²

2018

REM, Int. Eng. J.

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“…Em moagem de laboratório em bateladas, a corrosão pode representar entre 25 e 75% do desgaste de metal dependendo do minério, metal e condições ambientais envolvidos [6]. Portanto, ainda que já haja algum conhecimento acerca dos efeitos individuais das variáveis que afetam o consumo de corpos moedores, o entendimento do seu desgaste é uma tarefa desafiadora, devido ao grande número de variáveis envolvidas e à interação entre elas, além da dificuldade -ou mesmo impossibilidade -de observar diretamente essas variáveis [7]. Além disto, a contribuição relativa de cada um dos mecanismos ainda não está estabelecida [8].…”

Section: Introductionunclassified

Abrasão-Corrosão Em Corpos Moedores Na Moagem De Minério De Ferro

Massola¹,

Santos²,

Albertin³

et al. 2017

Anais Dos Seminários De Redução, Minério De Ferro E Aglomeração

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ResumoEste trabalho avaliou o efeito da corrosão no desgaste de bolas de aço e de ferro fundido branco de alto cromo durante a moagem de minério de ferro, através de ensaios eletroquímicos e de desgaste em moinho de laboratório. Foi feita uma alteração no modo tradicional de realização do ensaio de polarização potenciodinâmica, utilizando polpa de minério de ferro a 70% de sólidos (em peso) no eletrólito. As curvas de polarização obtidas foram compatíveis com os resultados de desgaste, de modo que as curvas correspondentes aos metais na condição mais ativa estavam associadas às menores taxas de desgaste nos ensaios de moagem em laboratório, demonstrando que os ensaios de polarização realizados podem ser utilizados como indicativo do comportamento do metal na moagem de minério de ferro. Verificou-se que, nas condições avaliadas, o efeito da corrosão não foi significativo no desgaste dos corpos moedores, tanto de aço quanto de FFBAC. Palavras-chave: Cominuição; Corpos moedores; Desgaste; Corrosão. ABRASION-CORROSION OF GRINDING MEDIA IN THE COMMINUTION OF IRON ORE AbstractThis work analyzed the effect of corrosion on the wear of balls made of steel and high chromium cast iron, while grinding iron ore, by means of electrochemical tests and wear tests conducted in a laboratory mill. A modification of the traditional potenciodynamic polarization test is proposed, using iron ore slurry at 70% w/w as an electrolyte. The results of the polarization curves were compatible with those from the wear tests, as the curves corresponding to the condition in which the metal showed the more active behavior were associated to the lower wear rates in the wear tests, suggesting that the modified polarization tests can be used as an indicative of the metal alloy behavior while grinding iron ore. The effect of corrosion was not significant in the wear of both the types of balls tested.

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“…The grinding theories have been studied extensively, including the simulation of the grinding operation (Sahoo et al, 2011), slurry rheology in grinding (He et al, 2004;Bazina and Chapleau, 2005;Fuerstenau et al, 2011), relationship between coal petrology and grinding properties (Trimble and Hower, 2003;Ding et al, 2007), consumption of steel media (Ural and Akyildiz, 2004), grinding behavior (Aldrich 2013), and so on. Some advanced technologies, e.g., scanning electron microscopy (SEM; Werner et al, 1999), backscattered scanning electron (BSE) image analysis, X-ray analysis, Mineral Liberation Analyzer, provide automated quantitative mineral liberation characterization (Fandrich et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Effect of different grinding conditions on the dissociation and flotation of difficult-to-float coal

Gan

Liu

Gui

et al. 2016

Energy Sources, Part A: Recovery, Utilization, and Environmenta

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The recovery of clean coal can be improved through grinding. In this study, grinding and flotation experiments were conducted on difficult-to-float coal. Results show that the particle size obtained from ball milling is finer than that obtained from rod milling. However, the particle size distribution obtained from rod milling is more evenly distributed than that obtained from ball milling. The contact styles of steel rod and steel ball are "line contact" and "point contact," respectively. Results from the flotation experiments are consistent with those from the orthogonal experiments.

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Consumption of steel grinding media in mills – A review

Cited by 69 publications

References 67 publications

Revisiting gouging abrasion test for jaw crushers

Revisiting gouging abrasion test for jaw crushers

Abrasão-Corrosão Em Corpos Moedores Na Moagem De Minério De Ferro

Effect of different grinding conditions on the dissociation and flotation of difficult-to-float coal

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