April 25, 2024

Flotation noun explanation

1 Hydrophilic mineral : A mineral surface that is easily wetted by water, called a hydrophilic surface, whose mineral is called a hydrophilic mineral. Such as quartz , mica .

2 Hydrophobic minerals: mineral surfaces that are not easily wetted by water, become hydrophobic surfaces, and their minerals are called hydrophobic minerals. Such as graphite , molybdenite

3 Balanced contact angle: When the wetted periphery is in equilibrium, at any three-phase contact point, the angle from the liquid-liquid interface through the inside of the liquid to the solid-liquid interface is made.

4 In-phase condensation: The surface potential of the particles is the same symbol and size, that is, ψ1=ψ2=ψ, and the resulting condensation is called in-phase condensation. In-phase condensation can be illustrated by the DLVO theory.

5 Heterogeneous condensation: The condensation of heterogeneous particles (with different surface potential symbols or values) with different surface potentials is called mutual condensation or heterogeneous condensation. Can be explained by DLVO theory.

6 Dispersed state: The particles in the slurry are in suspension, and each particle can move freely.

7 Aggregation state: If the fine ore particles in the slurry adhere to each other and agglomerate.

8 three aggregation states: condensation, flocculation, agglomeration

9 Coagulation (or agglomeration) : Under the action of certain inorganic salts (such as lime, alum, etc.), the phenomenon that fine aggregates in the slurry form clots is called coagulation. The main mechanism is that the external electrolyte eliminates the charge on the surface of the mineral and compresses the electric double layer.

10 flocculation (polymer flocculation and hydrophobic flocculation) : polymer flocculation: mainly by polymer flocculant (such as starch and polyelectrolyte) through the bridge bond, the fine ore particles are connected into a loose, network-like aggregation state .

11 agglomeration : After adding non-polar oil to the slurry, it will cause the ore particles to accumulate in the oil phase to form a mass, or the phenomenon that the ore particles will aggregate into a mass due to the arching of large and small bubbles.

12 Characteristic adsorption: However, when an ion (such as a surfactant ion) in the solution has additional force in addition to the electrostatic force on the surface of the mineral, such as chemical force, hydrocarbon chain association, etc., This ion enters the dense layer more, causing a more complex change in the potential of the counter ion layer.

13 half micelle adsorption: At higher concentrations, the hydrocarbon chains of the surfactant ions interact to form a semi-micelle state, resulting in half micelle adsorption.

14 Critical Micelle Concentration: The lowest concentration of surfactant molecules in the solvent to form micelles is the critical micelle concentration.

15 Zero point:è´Ÿ0 =0, the negative logarithm of the ion concentration, expressed in PZC.

16 isoelectric point: the charge of the ore-positioned ion is equal to the charge of the counter ion in the slip plane. When the zeta potential on the slip surface is ζ=0, the negative logarithm of the electrolyte concentration in the solution is recorded as PZR or IEP.

17 collector : an agent used to increase the hydrophobicity and floatability of minerals

18 Adjusting agent: In the process of flotation, in order to make the target minerals float and the non-target minerals are inhibited, it is necessary to add some chemicals to the pulp to create the conditions for successful sorting of minerals. These agents are called adjusting agents.

19 Foaming Agent: An agent used to enhance bubble stability and longevity.

20 Activator: An agent used to promote the action of minerals and collectors or to eliminate the effects of inhibitors.

21 Inhibitor: An agent used to increase the hydrophilicity of minerals and reduce the floatability of minerals.

22 PH adjuster: an agent used to adjust the pH of a slurry.

23 dispersant: a drug used to disperse slime

24 flocculant: a medicament to promote fine flocculation

25 polar group: a reactive functional group capable of selectively and relatively strongly adsorbing a collector on the surface of a particle, often referred to as a hydrophilic group.

26 Non-polar groups (i.e., hydrocarbyl groups): Another component of the collector that makes the surface of the particles hydrophobic, often referred to as a hydrophobic group.

27 three-phase foam: a foam composed of liquid, gas and solid three phases.

28 two-phase foam: a foam composed of two phases of liquid and gas.

29 primary mineral mud: fine particles produced by geological action inside the deposit, mainly various mud minerals in the deposit, such as kaolin , sericite, chlorite, etc., called "primary slime".

30 times of raw slime: The fine particles formed during the process of crushing, grinding, stirring, transportation, etc., are called “secondary slime”.

31 Intermediate product: The tailings of each selected operation and the foam products of each sweeping operation, which are further processed in the process, are collectively referred to as medium ore or intermediate products.

32 number of segments: refers to the number of times the grinding operation combined with the sorting operation.

The number of segments in the 33 flotation process : the number of times the mineral is ground-floating, then grinding-and then flotation.

34 sorting cycle: also known as flotation circuit, refers to a set of flotation operations included in a final product (concentrate), such as rough selection, sweeping and selection, and so on. a component selected from the group named as circulating lead, zinc cycle, Cu, Zn cycle, sulfur cycle, and copper loop.

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