How is the slurry concentration calculated in an iron ore concentrator

The concentration pot method is generally used to measure the slurry concentration in the production of concentrators, because it is a very simple and suitable method.

Just make a table in advance that lists the relationship between weight and concentration.

In production, the slurry is intercepted at a predetermined position, filled with a concentration pot, weighed on a balance or scale to obtain the weight, and the corresponding concentration is known by looking up the table. This is a common method in production.

If you want to be very accurate, you need to do it off-site. Take a certain amount of slurry, weigh it and record it; Filter out the water, dry it before weighing and recording it. Comparing the two weights gives a slurry concentration. This is generally done in the laboratory.

The concept and calculation formula of slurry concentration in concentrator.

Slurry concentration refers to the amount of solid ore particles in the slurry. Slurry concentration is usually expressed in three ways:

1), the percentage of solid content (%) represents the percentage of solid weight (or volume) in the slurry. It is more accurate to express the slurry concentration by volume than by weight, but for ease of calculation, gravimetric notation is usually used.

2) Liquid-solid ratio - indicates the ratio of liquid to solid weight (or volume) in the slurry. The liquid-solid ratio is also known as dilution.

3) Solid-liquid ratio - indicates the ratio of solid to liquid weight (or volume) in the slurry. The solid-liquid ratio is also known as slurry consistency.

1. Weight percentage concentration r

Calculations using slurries and solids:

r = [q／（q＋w）]×100% =（ q／g）×100% （9 — 4）

where q – the weight of the solid in the slurry, grams;

w - the weight of the liquid (water) in the slurry, grams;

g - slurry weight, grams.

The concentration determination of this method is relatively accurate, and it is suitable for the determination of the concentration of each operation in the field process examination and various small-scale beneficiation tests in the laboratory. However, the slurry needs to be dried, which takes a long time and consumes a lot of electricity, which cannot meet the timely requirements of on-site adjustment of the process.

2. The specific gravity of minerals and slurry is used to calculate, and the formula is:

r = [δn－1）／δn（δ－1）]×100% （9 — 5）

where δ—the specific gravity of the mineral; Generally, the specific gravity of minerals can be pre-measured in the laboratory according to different selection operations.

n - the specific gravity of the slurry.

There are two expressions of slurry concentration: percentage concentration and liquid-solid ratio concentration.

Percentage concentration: is the percentage of ore (solid) content in the slurry calculated by weight.

Represented by the symbol p.

Liquid-solid ratio concentration: It is expressed by the ratio of the weight of the liquid in the slurry to the weight of the ore, and is represented by the symbol R. For example, in 4kg of slurry, the weight of the liquid is 3kg, and the weight of the ore is 1kg, then the liquid-solid high Tanolis ratio concentration of the slurry is r=3:

1=3.This translates to a percentage concentration of 25%.

The percentage concentration p and the liquid-solid ratio concentration r can be calculated with the following formula:

The current methods for determining the slurry concentration are: manual measurement and automatic control.

1 h or 2 h at a time.

Let's measure its specific gravity first.

After knowing the specific gravity, I will give you a formula for making a concentration table, you can make a concentration table, and when measuring, you can directly connect the slurry weighing table to know its concentration, which is very convenient.

The following picture is a screenshot of my QQ space log, I hope it can help you, and I hope you can. If you have any questions about the fineness of the concentration, you can contact me to communicate and improve together.

There are two ways to express the slurry concentration: the percentage concentration and the liquid-solid specific concentration.

Percentage concentration: is the percentage of ore (solid) content in the slurry by weight, expressed by the symbol p.

p=[Weight of ore Weight of slurry (ore + water)] 100% liquid-solid ratio concentration: It is expressed by the ratio of the weight of the liquid in the slurry to the weight of the ore, and is represented by the symbol R. For example, in four kilograms of slurry, the weight of water (liquid) is three male bonds, and the weight of ore is one kilogram, then the liquid-solid ratio concentration of the slurry r=3:

1.This translates to a percentage concentration of 25%.

The percentage concentration p and the liquid-solid concentration r can be calculated with the following formula:

r=(100-p)/p

At present, there are two methods for determining slurry concentration: manual measurement and automatic control measurement.

The expression and determination method of slurry concentration is what Liangliang: slurry concentration refers to the content of solid particles in the slurry, and there are two ways to express the slurry concentration: the percentage of solid content and the liquid-solid ratio.

There are two methods for determining the concentration of slurry: manual measurement and automatic control. At present, most of the domestic concentrators have gained a lot of valuable experience in the research and promotion of automatic concentration control, which has laid the foundation for stable use in future production.

The remaining problems are insufficient sensitivity, unstable adjustment and control values, etc. However, regardless of whether the concentrator has installed automatic control equipment or does not, manual concentration measurement is still indispensable at present. Manual measurement, generally using the concentration pot method.