Thickening is used during two primary mineral processing operations: water removal and desliming. During water removal, the pulp density is increased through the injection of flocculants. These flocs settle and create a dense pulp while clarified water is removed through the overflow. During desliming, fine particles are removed through the …
The flocculation technique has been proven fruitful for separating beneficiation wastewater from tailings slurry in the thickening process. The tailings flocculation is significantly affected by the feed solid concentration and flow characteristics, however, it is difficult to capture the local solid concentration and the resulting variation …
R. T. Hukki, G. Diehl, and P. Vanninen, "Principles of Construction and Operation of the Channel and Syphon Thickener," in 7th Int. Mineral Processing Congress, Vol 1, Gordon and Breach, New York, pp. 115–123 (1965). ... "Factors Affecting the Design of Dissolved Air Flotation Systems." J. Water Pollut. Control Fed. Google Scholar
In this work, four industrial deep cone thickeners, which are used on tailings stream in Shahrebabak Copper Complex, were monitored for a year to analyze the effectiveness of different factors affecting the performance. Feed flow rate, fine fraction of the feed, solids concentration, flocculant dosage and concentration, solids density, pH ...
The quality of thickener will directly affect the result of dewatering operation, and high-quality thickener will increase 20%-30% thickening concentration, then strengthen thickening result. ... and it is one of the common thickening equipment used in the thickening and dehydration operation of mineral processing plant. Rake thickener …
In this work, four industrial deep cone thickeners, which are used on tailings stream in Shahrebabak Copper Complex, were monitored for a year to analyze the effectiveness of different factors affecting the performance. Feed flow rate, fine fraction of the feed, solids concentration, flocculant dosage and concentration, solids density, pH ...
In mineral processing plants, thickening is intended to remove the water content of pulp so that the mineral processing products meet the requirements of the other processes. ... The main equipment includes center drive thickener, periphery drive thickener, high-efficiency thickener, deep-cone thickener, and inclined-plate …
By further comparing thickeners in Figs. 1 b and 1 c, there are obvious structural differences, which mainly includes gentle floor angles (HiFlo tailing thickener)/steep floor angles (DCT), rake frame, thickener height, thickener diameter, etc.It can be observed that due to the larger height and more complex rake frame of the …
1 Grinding Particle Size. Both large ore particles (larger than 0.1mm) and small ore particles (less than 0.006mm) affect flotation efficiency and mineral recovery.
Laboratory and plant studies have focused on how key factors, such as mixing intensity, mixing duration and solids concentration, affect flocculation efficiency and, hence, thickener performance. ... Support from a wide range of mineral processing companies, thickener manufacturers and chemical suppliers for a series of research …
24. Scott K.J., Affecting settling rate of solids in flocculated pulps. Mineral processing and Extractive metallurgy. 77: 8597 (1968). 25. Author's reply (Scott K.J.) to discussion on paper published in Theory of thickening: …
In this paper, we concentrate on the data analysis of a paste thickener to find the affecting factors, utilizing a data set from an industrial thickener. 2 Process description and data set. ... A typical thickener used in mineral processing is illustrated in Figure 1. The flocculant rate and underflow rate are the two independent variables ...
Maximization of water recovery in thickeners is an essential step in the mineral processing industries. The Gol-E-Gohar iorn ore processing plant uses a center pier thickener with a diameter of 38 ...
Although it is important for a mineral processing plant to perform periodic laboratory batch tests to determine thickening parameters and in this way adjust …
Research projects directed towards 'Improving Thickener Technology' have been conducted by the AJ Parker Cooperative Research Centre for Hydrometallurgy since 1988 through the Australian Mineral Industries Research Association with support from 25 Australian and international mineral processing companies.
Particle properties affect the degree of separation that can be achieved with sedimentation. Size, shape, surface chemistry, and solids density all influence this process. These properties must be considered when selecting a rise rate, solids loading, and bed depth for a thickener.
Introduction: Mineral processing is a complex and crucial step in the extraction of valuable minerals from ore. Among the various processes employed in this industry, thickening plays a pivotal ...
Dewatering of the final concentrate and tailings of the mineral processing plants is necessary owing to substantial quantities of water accompanied by the ore minerals. Thickeners are recognized as one of the most cost-effective technologies for water recovery from concentrate and tailings streams.
The first step to optimize the design and operation of thickeners is to understand how they work and what factors affect their performance. Thickeners are classified into two types: conventional ...
Thickeners are used to either: concentrate mineral slurries prior to extraction of commodities. create a liquid free of solids for subsequent extraction of dissolved …
By addressing these various factors through systematic troubleshooting and regular maintenance, mineral processing plants can optimize thickener performance, …
True enough, a thickener doesn't make a racket like a ball mill, or spew out froth like a flotation machine, or bounce up and down like a jig, but down inside that big tank there is a lot going on just the same. ... Dewatering Tags thickener operation manual, thickening in metallurgy, thickening in mineral processing. Previous. Next ...
The Coe–Clevenger and Talmage–Fitch approaches (to be described below) are the most widely used methods of thickener sizing in the mineral processing industry. ... Using turbulent pipe flow to study the factors affecting polymer-bridging flocculation of mineral systems. International Journal of Mineral Processing, 87 (2008), pp. 90-99.
The AMIRA P266 'Improving Thickener Technology' series of projects has sought to provide a firm scientific basis for feedwell and thickener design, a requirement as pressures on water usage in the ...
Many factors affect the output and quality of ball mills, which can generally be divided into three categories: process, mechanical, and management. From the perspective of production technology, the influencing factors are mainly the following 10 points: 1. Particle size of grinding materials
During processing, the overflow part will moves upward and be filtered further when passing through the mud layer. It will also be settled and purified by clarification layer and discharged from overflow dam. 02 Factors affecting the working effect of efficiency thickener in mineral processing 1. The flocculant influence
Thickening of mineral processing products is the process in which the solid and liquid in the pulp are relatively separated, so as to obtain the thick pulp with high …
The choice of Settling and Thickening test method and procedure depends to some extent upon the temperature of the pulp, its flocculating characteristics, the required supernatant clarity, and the equipment available.. The Long Tube Method may be used for all materials which settle without a clearly defined interface. However, where the feed in …
Mineral processing and Extractive metallurgy. 77: 85-97 (1969). 26.Discusions and contributions on Theory of thickening: factors affecting settling rate of solids in flocculated pulps. Mineral processing and Extractive metallurgy. 116-119 (1969). 27.Svarovsky L., Solid-Liquid Separation: Thickeners.
The settling rates you mention in the thickener are typically calculated using Stoke's equation (and the retention time provided by the thickener) and then confirmed by settling tests of the thickener feed slurry. The settling rate determines the thickener area, or if the settling rates are too slow, settling aids may have to be used.
