Results 21 to 30 of about 784 (110)

A Product Diffusion Model for the Extraction of Cerium and Yttrium from Magnetic Coal Fly Ash Using Citric Acid Solution

International Journal of Technology, 2022
The recovery of rare earth elements from coal-related materials, primarily fly ash, has become an emerging topic for the past few years. The availability of fly ash as solid waste from coal combustion and its low radionuclide concentrations benefit ...
Pramesti Prihutami, Wahyudi Budi Sediawan, Agus Prasetya, Himawan Tri Bayu Murti Petrus   +3 more
doaj   +1 more source

An increase in the Copper Recovery of the Sarcheshmeh Copper Complex through Reagent Modifications [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2022
In the flotation of sulfide minerals, particularly in the separation between pyrite and chalcopyrite, adjustment of the pH and reagents dosages is very important.  Process auditing at the Sarcheshmeh copper complex showed that the pH in the rougher cells
Ehsan Salajegheh, Gholamabbas Parsapour, Abbas Akbari   +2 more
doaj   +1 more source

Characterization of Nitrogen Release in Modified Controlled-Release-Fertilizer using Rice Husk Biochar

International Journal of Technology, 2020
Rice husk biochar was added to modify ureic fertilizer in order to control nitrogen release in two methods: (1) mixed-granule and (2) as a coating. The mixed-granule fertilizer was made of varied compositions of rice husk biochar, ureic fertilizer ...
Himawan Tri Bayu Murti Petrus, Andreas Diga Pratama Putera, Inasanti Pandan Wangi, Muhammad Aulia Ramadhian, Hendrik Setiawan, Agus Prasetya   +5 more
doaj   +1 more source

Flotation performance analysis on coal washery rejects

Energy Geoscience, 2021
The coal washery rejects cause major environmental problems in various parts of the globe. Nearly 1 Mt of coal rejects discarded as waste, is accumulated per annum in India, during washing or cleaning of raw coal.
P.S. Kumar, O. Sivrikaya, S. Pradhan, P.C. Nagannor   +3 more
doaj   +1 more source

Influence mechanistic of rheological properties and floc structure on coal slurry sedimentation and dewatering

Meitan kexue jishu
Flocculation and sedimentation of coal slurry are critical solid–liquid separation processes in coal preparation, and the floc structure and rheological properties of the slurry affect subsequent dewatering performance.
Wenjie Fang, Yuping Fan, Xiaomin Ma, Xianshu Dong, Na Li, Chen Zhang, Dehao Li, Kangpei Jin, Gu Gong   +8 more
doaj   +1 more source

Structural evolution of coal sludge filter cake and optimization mechanism of combined chemicals in the process of filtration pressing

Meitan xuebao
The structure of coal sludge filter cake has an important influence on the dewatering effect. In this study, the characteristics of the filter cake structure and its evolution law in the process of filter press dewatering were investigated by using the ...
Xiaomin MA, Xiaosong SUN, Xianshu DONG, Yuping FAN, Ming CHANG   +4 more
doaj   +1 more source

Application of gravity separators for enrichment of South Chah-Palang tungsten ore [PDF]

International Journal of Mining and Geo-Engineering, 2016
In the present study, the possibility of concentrating tungsten-copper vein ore in South Chah-Palang was examined using gravity separators including Jig Machine (-2360+600 μm), shaking table (-600+120 μm), and multi-gravity separator (MGS) (-120 μm). The
Hamid Hedayati Sarab-shahrak, Mohammad Noaparast, Sied Ziaedin Shafaei Tonkaboni, Sied Mehdi Hosseini   +3 more
doaj  

Experimental Study on Flotation of a Molybdenum Mine in Inner Mongolia by LKD-3

Kuangchan zonghe liyong
In view of the problems of complex dissemination state, serious argillization and difficult to reduce tailings grade of a molybdenum mine in Inner Mongolia, LKD-3 collector was used to conduct the flotation test.
Ying LI, Hong LIU, Jian WANG, Yiwen MA, Xiaojun JIANG, Qi ZHANG, Bo CUI   +6 more
doaj   +1 more source

Improved recovery of a low-grade refractory gold ore using flotation–preoxidation–cyanidation methods

International Journal of Mining Science and Technology, 2014
In this work, different flotation–preoxidation–cyanidation methods are considered for treating a low-grade refractory gold ore. On the one hand, the results of selective flotation show that 22% and 31.1% of total Sb and As, respectively, remained in the ...
Soltani Faraz, Darabi Hossna, Badri Rezgar, Zamankhan Piroz   +3 more
doaj   +1 more source

General formulas for drag coefficient and settling velocity of sphere based on theoretical law

International Journal of Mining Science and Technology, 2015
The settlement of particles is of great importance in many areas. The accurate determination of drag coefficient and settling velocity in wide Reynolds number (Re) range remains a problem.
Hongli Yang, Minqiang Fan, Airong Liu, Lianping Dong   +3 more
doaj   +1 more source