The results to be obtained in flotationdepend, more than in any other concentration process, on the proper coordination of a considerable number of operating variables. These variables are listed below: 1. Ore Mineralogical character. Recoverable mineral content. Size of particles. 2. Principal reagent Ch…
Modifiers such as deers, depressants and activators allows for more control and increased efficiency in flotation circuits. BASF's modifiers are used in a wide range of mining operations …
These four types of reagents are basic for use in a flotation circuit. The last group of reagents that we are going to discuss are the modifiers, these are reagents that are used to …
IMPROVING COAL FLOTATION BY INTRODUCING A MODIFIER 475 On account of the increase in ash content of the concentrate when using Sinterol modifier, the con-sumption of MTA collector is decreased to 0.512 kg/t of coal. In the analysis of the flotation characteristics when using frothing agents that differ in molecular struc-
In this way, after the addition Table 4 Results of the flotation tests (a) Effect of complexing agents on flotation with NaDBS Complexing agent Calcite Barite" Fluorite' NTA EDTA CDTA SO HBO AHA 8-HQ (b) Effect of complexing agents on flotation with NaOL Complexing agent Calcite' Barite` Fluoritef NTA EDTA CDTA SO HBO AHA 8-HQ (c) Effect of ...
Abstract The flotation of coal with different ash content when using Sinterol modifier is studied. If the modifier consumption is 1.0–3.0 g/t of coal fines, the extraction of the coal's combustible mass in the concentrate is increased; the selectivity of the process is increased; and the loss of the coal's organic mass with the flotation wastes is decreased. The …
03 Copper ore flotation modifier. Modifiers are agents added to adjust the pH and chemical conditions of the flotation slurry to optimize copper recovery. Common modifiers include conditioners (such as lime or sulfuric acid), inhibitors, and activators. ... and can be used as a dispersant to help evenly disperse the flotation agent in the ...
US10927248B2 US15/686,732 US201715686732A US10927248B2 US 10927248 B2 US10927248 B2 US 10927248B2 US 201715686732 A US201715686732 A US 201715686732A US 10927248 B2 US10927248 B2
The action mechanisms of ZnSO 4, TETA (triethylenetetramine) and NaHSO 3 used as depressants in order to limit ZnS activation were examined. Laboratory flotation tests with and without Cu 2+ ions (the ions responsible for ZnS activation) were performed. All depressants showed equal or better flotation performance relative to baseline tests.
Based on their role, flotation reagents are classified as collectors, frothers, and modifiers. All three types of reagents have critical roles and importance, and are involved in complex interactions.
A flotation modifier which assists in the selectivity (sharpness of separation) or stop unwanted minerals from floating
Modifiers: Dispersing Agents & Deers . In mineral processing, modifiers enable greater control over mineral yields and flow rates. More specifically, deers and dispersing agents for mineral processing maximize efficiency during sulfide flotation by preventing slimes from coating around minerals. High-performance dispersants and deer ...
Influence of Organic and Inorganic Modifiers on the Selective Flotation of Fluorite from Calcite with Sodium Oleate ... sodium carbonate acts more effective than calcium chloride as calcite depressant agents. In the ore flotation experiments, a pyrolusite concentrate containing higher MnO grade and recovery is obtained using DDA collector in ...
Cyanide-free technology of complex copper-lead ores flotation may be improved through enlarged range of pH values, enhanced copper recovery into copper concentrates due to additional recovery of secondary copper sulfides, as well as through enhanced efficiency of lead sulfides depression in process of new flotation modifiers-based selective separation. Study of …
Over the past few decades, the need to process more minerals while lowering capital costs has led to an increase in the size of flotation cells, e.g., 0.03 m3 to 1000 m3. However, this increase has created new challenges in the operation and design of industrial flotation cells, particularly in terms of froth removal, because the distance the froth must travel …
The Lupromin range includes flotation aids for non-sulfidic minerals, while our Luprofroth and Luproset ranges provide frothers and modifiers for numerous flotation application. Beyond the standard portfolio the BASF team develops tailor-made collector and/or frother solutions in collaboration with customers and supports test works in ...
Flotation reagents are chemical reagents used in mineral flotation processes that modify mineral surface properties, increase or decrease mineral floatability, and make ore pulp properties and stability more favorable for …
pH Modifiers AKA Minor Agents. The role of the minor agents (pH Modifiers) is to increase the grade of concentrate, i.e., aid in selection, and to a lesser extent, aid recovery. ... The relation between percentage of solids and …
Flotation reagents have two important structural features: a functional group consisting of donor atoms or ligands, and a substituent group, which is hydrophobic consisting of alkyl aryl hydrocarbon chains in the case of collectors and frothers, or hydrophilic in the case of modifiers (except for inorganic modifiers, which comprise mainly inorganic bases and metal ions).
Porosity Control Agents; Anti-Caking Coatings; Asphalt and Bitumen. Back. Asphalt and Bitumen ... We will work closely with you to develop flotation reagents custom-tailored to your unique ore to maximize your mineral grade and recovery. ... pH Modifiers Learn More. mining-ph-modifiers-product-subsegment-2.jpg. Frothers / Surfactants Learn More ...
This invention relates to the pH modifier in alkaline froth flotation processes to treat oxide and semi-soluble salt ores, such as phosphates, sulfates, carbonates and halides, to increase the recovery while generally maintaining or improving selectivity, thus the grade of desired minerals. The invented pH modifier is used to replace traditional alkaline pH modifiers—hydroxides, …
With the use of a dispersing agent a purer concentrate is obtained because they decrease the extent to which gangue particles cling to the sulfide minerals. Most dispersing modifiers are also either depressants or activators. In short, they have multiple functions. Dispersing reagents are inorganic compounds and organic polymers.
According to the effect of the agents, the flotation reagents are mainly divided into three categories: ing agent, collecting agent and metabolic modifier. (1) ing agent: the organic surface active substance distributed on the air …
First let's change the amount of the Flotation Depressants used. The valuable mineral that isn't liberated from the unwanted mineral will begin to be depressed along with the waste. For the floatation operator, the change that will become most apparent is, that the color of the froth will begin to reflect more of the wanted mineral's color.
Flotation reagents refers to the agent that used in mineral flotation process, which can adjust the flotation behavior of minerals thus achieving a good effect of mineral separation.Currently using flotation reagents is the most flexible, effective, and convenient method of controlling flotation process.The commonly used flotation reagents can be mainly divided …
This invention relates to the pH modifier in alkaline froth flotation processes to treat oxide and semi-soluble salt ores, such as phosphates, sulfates, carbonates and halides, to increase the recovery while generally maintaining or improving selectivity, thus the grade of desired minerals. The invented pH modifier is used to replace traditional alkaline pH modifiers - hydroxides, …
Modifiers are substances that alter the properties or behavior of materials during separation processes, enhancing the efficiency and effectiveness of techniques such as flotation and magnetic separation. These modifiers can be used to improve the selectivity of separation, optimize the recovery of valuable components, and minimize unwanted impurities in the final …
Flotation results obtained for calcite and apatite with oleate are given in Figs. 5 and 6. Calcite shows a sharp drop in flotation between pH 8 and 10; while elsewhere in the tested pH range, flotation is more than 95%. The flo-tation of apatite, on the other hand, is nearly between pH 6 and 12, with
According to the effect of the conditioners, flotation conditioners can be divided into the following categories: pH modifiers, activators, inhibitors, dispersant, etc. pH modifiers : It is a kind of reagent mainly used to adjust the …
Flotation Agent. The term flotation agent is frequently used to describe flotation reagents. From: Encyclopedia of Separation Science, 2007. Add to Mendeley. Set alert. ... Tetrahydrothiopyranones have been used as stabilizers for polyamide fibres 〈78MI22500〉 or, when elaborated upon, as modifiers for other synthetic fibres 〈75MI22503 ...
Improved sparge compositions for reverse froth flotation separation and uses thereof, and methods of reverse froth flotation are described. The sparge compositions comprise sulfonated polymeric modifiers which can act as dispersants and depressants, and the compositions are suitably used in the reverse froth flotation of particulate material containing ultrafine particles.
These important flotation agents are commonly characterized as either ''selective'' or ''powerful'' and are chosen following general guidelines and verification by laboratory and/or pilot plant tests. ... Jera, T.M.; Bhondayi, C. A Review of Flotation Physical Froth Flow Modifiers. Minerals 2021, 11, 864. Keywords: froth stability; froth phase ...
