Role of feed moisture in high-pressure roll mill comminution

Fuerstenau, D.W.; Abouzeid, Abdel-Zaher M.

doi:10.1016/j.minpro.2006.11.001

Cited by 26 publications

(9 citation statements)

References 6 publications

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“…One thing is certain: the process of crushing entails high energy consumption (Tęsio-rowski [15], Numbia et al [19]), and wear off the crusher components (Mierzwa et al [18]), which aggravates their efficiency. Strength parameters of the feed (Akbarnezhad et al [1]) and physical characteristics such as moisture content (Fuerstenau and Abouzeid [10]) also avert influence on the process of crushing.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Energy Consumption of Crushing Processes – Comparison of One-Stage and Two-Stage Processes

Ciężkowski

Maciejewski

Bąk

2017

Studia Geotechnica Et Mechanica

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This paper presents experimental comparison of two machine crushing technologies: one-stage and two-stage. The study was carried on a model double-toggle jaw crusher which allows crushing forces, energy and toggle displacement to be measured. The main aim of the work was to determine the energy consumption of crushing process assuming a given level of fragmentation. Studies were performed on three rocks: granite "Strzegom", limestone "Morawica" and sandstone "Mucharz". The material tested had a cubic shape and average dimension of 90 mm. One-stage crushing was carried out for outlet slot er = 11 mm, and two-stage crushing for er = 24 mm and 11 mm. In the tests special design of variable profile moving jaw was used and fixed jaw was flat. The analysis of the results shows that taking into account energy consumption, it is better to use two-stage crushing process. For given materials energy consumption in the two-stage crushing process was reduced by 30%.

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Section: Introductionmentioning

confidence: 99%

Analysis of Energy Consumption of Crushing Processes – Comparison of One-Stage and Two-Stage Processes

Ciężkowski

Maciejewski

Bąk

2017

Studia Geotechnica Et Mechanica

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“…A alimentação é introduzida na abertura entre rolos, onde a diminuição de tamanho ocorre pelo efeito da cominuição. Em geral, a motivação para a utilização de prensas de rolos está relacionada à sua maior eficiência energética, se comparada com a eficiência dos britadores e dos moinhos convencionais, pois, nas prensas de rolos ocorre lenta aplicação de carga sobre as partículas, causando colapso estrutural dos grãos, de modo que a energia perdida em calor e ruído é minimizada [1]. Prensas de Rolos de Alta Pressão permite uma economia significativa no custo operacional para cuminuição de minérios, especialmente os de maio dureza.…”

Section: Introductionunclassified

Aplicação De Redes Neurais Artificiais Na Predição De Ganho De Superfície Específica Em Prensa De Rolos

Subtil¹,

Pinto²,

Carvalho³

et al. 2016

ABM Proceedings

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ResumoA tecnologia de cominuição de minérios através de Prensas de Rolos de Alta Pressão vem se destacando nos diversos segmentos da mineração, o que faz com que as usinas de pelotização de minério venham introduzindo Prensas de Rolos em seu processo produtivo. Apesar dos benefícios dessa mudança, observa-se pouco conhecimento da influência das variáveis intervenientes ao processo de prensagem e sua relação com o Ganho de Superfície Específica. Essa compreensão é fundamental para a maximização do desempenho de prensagem. Esse artigo utiliza Redes Neurais Artificiais (RNA) para predição dos resultados no Ganho de Superfície Específica e quantifica a relevância de cada variável no processo de prensagem. Os valores preditos gerados pela RNA obtiveram ótima aproximação com os dados reais, o que indica que utilização de RNA possibilita a intervenção proativa no processo produtivo podendo resultar em uma melhoria de desempenho da prensa. Palavras-chave: Minério de ferro; Cominuição; Redes neurais. NEURAL NETWORK APLICATION TO PREDICT SPECIFIC SURFACE GAIN ON GRINDING ROLLS AbstractOre comminution technology using grinding rolls has been High Pressure Grinding Rolls in various sectors of mining, what causes the ore pelletizing plants introduce grinding rolls in their production process. Despite the benefits of this change, there is little knowledge of the intervening variables influence to the pressing process and its relation to Specific Surface Gain. This understanding is critical to maximizing press performance. This research used Artificial Neural Networks (ANN) to predict Specific Surface Gain and quantified the relevance of each variable in pressing process. Predicted values generated by ANN obtained good approximation to the actual data, indicating that use ANN allows proactive intervention in production process may result in a performance improvement of the press.

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“…It is reported in Ref. [17] that about 5% of the total electrical energy produced in the world, is consumed by mineral processing circuits, of which 80% goes to comminution process (crushing and grinding). Comminution is the first operation in mineral processing whereby the coarse ore coming from mines, usually referred to as run-of-mine (ROM) ore, is fragmented into particles with reduced or smaller size in order to extract the valuable minerals.…”

Section: Introductionmentioning

confidence: 99%

Systems optimization model for energy management of a parallel HPGR crushing process

Numbi

Xia

2015

Applied Energy

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This work proposes a systems optimization control model for energy management of a parallel crushing process made up with high-pressure grinding rolls (HPGR) machines. The aim is to reduce both energy consumption and cost through optimal control of the process and load shifting, respectively. A case study of a copper crushing process is solved under three scenarios in order to evaluate the effectiveness of the developed model. Simulation results show that 41.93% energy cost saving is achieved through load shifting by coordinating the rotational speed of HPGRs. It is further shown that the energy saving can be achieved when the two HPGRs are not operated with equal overall efficiency, but also through a small decrement in rolls operating pressure. In the first case, 1.87% energy saving is obtained while in the last case, about 4.5% energy saving is achieved for every decrement of 0.2N/mm 2 in rolls operating pressure without significant change in product quality.

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Role of feed moisture in high-pressure roll mill comminution

Cited by 26 publications

References 6 publications

Analysis of Energy Consumption of Crushing Processes – Comparison of One-Stage and Two-Stage Processes

Analysis of Energy Consumption of Crushing Processes – Comparison of One-Stage and Two-Stage Processes

Aplicação De Redes Neurais Artificiais Na Predição De Ganho De Superfície Específica Em Prensa De Rolos

Systems optimization model for energy management of a parallel HPGR crushing process

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