Potassium humate is a natural organic fertilizer that is rich in organic matter and potassium. It can increase soil fertility and improve soil structure, and is widely used in agricultural production. The following introduces the specific extraction process of potassium humate.
1. Preparation of potassium humate raw materials
The humus soil collected from the wild is composted to improve its maturity, and then the mature humus soil is screened or crushed to facilitate further processing and extraction.
2. Cleaning up impurities in potassium humate
Put the processed humus soil into a vibrating screen or a powerful blower to clean out impurities, and remove branches, stones and other debris to ensure the smooth progress of subsequent processing.
3. Potassium humate alkali extraction
Under the action of alkali solution, the organic acids in the humus soil are dissolved, and the resulting solution contains not only humic acid, but also impurities such as acid lime and inorganic salts.
4. Neutralization and acidification by potassium humate
Neutralize the sodium carbonate and calcium hydroxide in the alkali-extracted potassium humate solution to make the aqueous solution in a weakly acidic state. The impurities can become a precipitate that is not easily soluble in water, making it easier to filter and separate. The precipitate can be removed to obtain pure potassium humate.
5. Filtration and separation of potassium humate
The potassium humate solution is separated head-to-tail by filtration. Impurities are removed by filtration, and the content of acidic substances can reach the standard. The filtered solution contains a small amount of suspended particles, and the suspended particles are gradually reduced through filtration with fine filter paper, dilution, and other operations.
6. Concentrated potassium humate
The filtered potassium humate solution is concentrated and dried through a vacuum evaporator and air flotation drying equipment to obtain potassium humate particles. After concentration treatment, the moisture content is reduced from 60% to 30%, and the potassium ions contained in non-moisture content gradually increase.
7. Potassium humate packaging and delivery
Potassium humate is subjected to fine molecular classification, bagging, and storage. The product quality must be tested before use to improve the market access threshold of the product.
