Eurasian Mining最新文献_第7页

Technology for processing quartz–sericite ore by selective grinding and flotation 石英-绢云母选择性磨选浮选选矿技术

IF 0.7

Eurasian Mining Pub Date : 2022-12-22 DOI: 10.17580/em.2022.02.11

T. Yushina, Van Trong Nguyen, A. M. Dumov, Thu Thuy Nguyen

引用次数: 0

Consulting on energy management systems in mining industry 采矿业能源管理系统咨询

IF 0.7

Eurasian Mining Pub Date : 2022-12-22 DOI: 10.17580/em.2022.02.07

A. Lyakhomskii, A. Petrochenkov, S. Petukhov, E. N. Perfileva

引用次数: 1

Development of potentiometric titration method for assessing coals’ oxidation degree 评价煤氧化度的电位滴定法的建立

IF 0.7

Eurasian Mining Pub Date : 2022-12-22 DOI: 10.17580/em.2022.02.20

S. Epshtein, E. E. Sokolovskaya, N. Dobryakova, J. Hao

引用次数: 0

Seismically safe parameters of confined blasting in levelling dry dock bottom 调平干船坞底部受限爆破的地震安全参数

IF 0.7

Eurasian Mining Pub Date : 2022-12-22 DOI: 10.17580/em.2022.02.04

V. Tyupin, E. B. Yanitsky, A. E. Polyakh, I. Ignatenko

引用次数: 0

Performance of diamond circular saws with innovative Fe-based binders 采用创新铁基粘结剂的金刚石圆锯性能

IF 0.7

Eurasian Mining Pub Date : 2022-12-22 DOI: 10.17580/em.2022.02.15

P. Loginov, E. N. Avdeenko, O. S. Manakova, E. Levashov

引用次数: 0

An innovative way of underground mining 地下采矿的创新方式

IF 0.7

Eurasian Mining Pub Date : 2022-06-30 DOI: 10.17580/em.2022.01.07

Y. S. Oryngozhin, M. Bitimbaev, N. A. Milеtenko, Z. Alisheva

引用次数: 0

Influence of ore processing behavior on heap-leach cyanidation and agitation leaching efficiency 矿石处理行为对堆浸氰化和搅拌浸出效率的影响

IF 0.7

Eurasian Mining Pub Date : 2022-06-30 DOI: 10.17580/em.2022.01.11

P. Fedotov, A. Senchenko, K. Fedotov, A. Burdonov

引用次数: 0

Modeling impact fracture of rock by hydraulic hammer pick with regard to its bluntness 用液压锤式截齿建立岩石冲击断裂钝度模型

IF 0.7

Eurasian Mining Pub Date : 2022-06-30 DOI: 10.17580/em.2022.01.15

V. Bolobov, S. Chupin, Le-Thanh B.

{"title":"Modeling impact fracture of rock by hydraulic hammer pick with regard to its bluntness","authors":"V. Bolobov, S. Chupin, Le-Thanh B.","doi":"10.17580/em.2022.01.15","DOIUrl":"https://doi.org/10.17580/em.2022.01.15","url":null,"abstract":"of rocks and artificial composites is carried out in various ways. One of the most common methods is the impact fracture. The conical pick of JCB HM380 hydraulic breaker was used as the impact tool. The experimental study of rock fracture was carried out on an artificial composite—concrete. The depth of penetration of the pick into concrete was used as the test parameter. The model was based on the model of Professor V. B. Sokolinsky. The model developed in this work takes into account the degree of bluntness of the tool in single and multiple impact. The system was considered as a two-component system due to the high stiffness of the pick–granite contact (as against the hammer piston–pick stiffness). The wave processes in the pick were disregarded because of the small length of the pick. The pick penetration depth in rocks was calculated theoretically, using the developed mathematical model, at each impact of the pick, and then was compared with the experimental data. The fracture tests also used JCB HM380 breaker and concrete. The penetration depth was determined from the step-frame analysis of video filming of the process. It is found that the pick blunting causes a monotonic increase in the rock resistance to the pick penetration, both in single and multiple impact, while the depth of the tool penetration and the blow time decrease (as compared with the initial state of the tool, by 28% and 20%, respectively).","PeriodicalId":52085,"journal":{"name":"Eurasian Mining","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42227845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Effect of high-power electromagnetic pulses and dielectric barrier discharges on physicochemical and flotation properties of perovskite 大功率电磁脉冲和介质阻挡放电对钙钛矿理化及浮选性能的影响

IF 0.7

Eurasian Mining Pub Date : 2022-06-30 DOI: 10.17580/em.2022.01.09

V. Chanturiya, I. Bunin, M. Ryazantseva, I. Khabarova

引用次数: 0

Performability of electro-hydro-mechanical rotary head of drill rig in open pit mining: A case-study 露天开采钻机电液机械回转头的性能研究

IF 0.7

Eurasian Mining Pub Date : 2022-06-30 DOI: 10.17580/em.2022.01.16

R. Muminov, D. Kuziev, V. V. Zotov, E. S. Sazankova

{"title":"Performability of electro-hydro-mechanical rotary head of drill rig in open pit mining: A case-study","authors":"R. Muminov, D. Kuziev, V. V. Zotov, E. S. Sazankova","doi":"10.17580/em.2022.01.16","DOIUrl":"https://doi.org/10.17580/em.2022.01.16","url":null,"abstract":"reliability improvement of drill rig model SBSH-250MNA-32. The article describes the studies in the field of mining machines and the relevant engineering solutions. It is critical for Russia to preserve and replenish its mineral resources and mineral reserves to pursue social and economic advance. The priority growth of coal and gold production using the advanced open pit mining method can increase percentage of the latter in cumulative mineral mining by not less than 50%. Furthermore, it is necessary to cut down costs of production by 4–5%. The main and extremely labor consuming process in open pits in Russia is drilling which takes up to 40% of total mining cost [1–3]. The common method of drilling in rocks with the hardness factor of 6–20 on Proto-dyakonov’s scale in Russia is the roller-bit drilling [4–6]. This drilling processes is accom-panied with high dynamic loading imposed on the rotary-and-feed mechanism [7–9]. One of the ways of reducing dynamic loads in the roller-bit drill rigs is redesigning of the rotary-and-feed mechanism to possess higher safety and anti-vibration properties, simpler structure, as well as better performability and longevity [7, 8, 10–13]. This article describes and substantiates the design and operating principle of the electro-hydro-mechanical rotary head, its prototype testing, the research program and procedure, the instrumentation preparation, the research objective as well as the test data processing and analysis as a case-study of drill rig model SBSH-250MNA-32. three-level active rectifier, which ensure the standard quality power supply in longwall, are substantiated.","PeriodicalId":52085,"journal":{"name":"Eurasian Mining","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44691629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1