Feed mills for feeding pigs from 3 t/h

The technology of production of compound feeds for pigs has certain requirements in comparison with compound feeds for cattle. Namely, to prevent the spread of ASF, a mandatory requirement in the technology of compound feed production is the temperature treatment of compound feed, which is achieved by granulating loose compound feed.

Having a group of technologists on staff, we are ready to jointly develop a technology for the production of compound feeds for pigs using modern high-tech equipment.

Appointment of the production line

Main purpose: optimization of diets according to the content of feed units per 1 ton of finished products, the content of crude protein, macro- and microelements, vitamins and other biologically active substances in accordance with feeding standards.

Compound feeds can reduce grain consumption by almost a third and increase animal productivity by 15-20% compared to unfortified grain.

Raw materials and products

Compound feed for pigs is produced from various types of raw materials, such as:

• Grains: wheat, barley, corn and other grains.
• Grain and grain products of cereals: corn, barley, oats, rye, wheat, triticale, peeled barley, etc.;
• Legumes and oilseeds: peas, rapeseed, soybeans, lupin, vetch, forage beans;
• By-products of milling and cereal production: bran (rye, wheat);
• Cake and meal (sunflower, soy, rapeseed and others);
• Feed products of food production: flour (meat and bone, blood, meat and others), fish flour, skimmed milk powder, milk sugar, albumin, molasses and others;
• Vegetable feed;
• Amino acids: feed methionine, dextrose monohydrate and others;
• Mineral raw materials: table salt, chalk, limestone flour, defluorinated phosphate, monocalcium phosphate and others;
• Biologically active substances: premixes, which include: trace element salts, vitamins, amino acids, enzyme preparations, antioxidants, flavorings and others.
• Vegetable oils: sunflower, cottonseed, soybean and other oils.

Finished product

Compound feeds for pigs are produced mainly in loose and granular form.

Production technology

The technology for the production of compound feed is a set of operations, the sequential implementation of which makes it possible to obtain feed with specified parameters from feed raw materials that differ significantly from each other in terms of the complex of physical and mechanical properties, nutritional value, and chemical composition in accordance with the recipe.

Advantages of technology with clearly expressed batch work — in low inertia, quick response to control input, absence of unaccounted for raw material residues, the possibility of switching to the production of feed according to a different recipe with minimal loss of time.

Process automation

A smart digital information processing system helps achieve better production performance because... allows you to compare the indicators with the predicted output.

The production technology of feed for pigs is quite complex and usually includes the following steps:

1. Acceptance, placement and storage of raw materials;
2. Preparation of raw materials for dosing;
3. Grinding of raw materials;
4. Dosing of raw materials on multicomponent weighing dispensers and microdosing;
5. Mixing of feed components;
6. Introduction of liquid components into the main mixer, mixer-conditioner of the granulation line;
7. Granulation of compound feed;
8. Cooling of granulated feed;
9. Granulation in the production of feed grains;
10. Sifting of granules or grits;
11. Storage of finished products.
12. Long exposure before granulation (long exposure conditioner);
13. Granule crushing (roller shredder) (long exposure conditioner);
14. Spraying of fat on granules (long exposure conditioner).

Main equipment in the line

• Dosing units - weighing dispensers are designed for dosing and weighing the required amount of feed components. The purpose of dosing is to supply the components in the amount prescribed by the recipe. The essence of the process lies in the fact that the components prepared for mixing enter the bins, from which the dosing machines supply the components in a certain percentage. If the dosage is incorrect, the percentage of components in compound feeds established by the recipe is violated and their quality decreases. That is, the dosing process is the main technological operation of the production of compound feeds.
• Hammer crushers - are designed to grind raw materials to smaller particles and into a powdery product. Hammer crushers can be used for both pre-crushing and post-crushing. In feed production, the uniformity of the granulometric composition contributes to better absorption of nutrients contained in compound feeds.
• Mixers - are designed for mixing a wide range of raw materials, additives and liquid components into a homogeneous feed mixture. Mixing is understood as a mechanical process in which components that are initially separated form a homogeneous mixture. The more evenly distributed all the components are, the higher the uniformity of the mixture.
• Granulators - are designed for the production of feed pellets of various diameters and hardness when the loose feed is granulated after crushing, mixing and conditioning. The prepared loose compound feed, getting from the mixer into the pressing zone, is carried away by a rotating annular matrix and pressing rolls, a wedge gap between the matrix and the roll. The product is pre-compacted, then gradually compressed. The pressing pressure gradually increases as the product is tightened into the wedge gap, elastic and plastic deformations increase. The air between the particles and a certain amount of surface moisture is removed from the material. Then, when the pressure reaches its maximum value, the product passes through the holes of the matrix, acquiring certain dimensions, shape and strength. When leaving the matrix, the granules are cut off with knives, bringing them closer or pushing them away, which can be adjusted to the length of the granules.
• Cooler - counter-current cooling system is designed to cool the granules after granulation to a temperature of ± 5°C above ambient temperature. This is necessary to achieve good PDI, flowability, spoilage protection and minimize chemical and biochemical reactions.
• Grinder – for grinding granules into grits. At the same time, the advantages achieved in the granulation process are preserved to the maximum extent possible. The size of the grits is determined by the needs of the animals and the feeding system. Animals spend a lot of energy consuming loose feed, but grains are consumed easily and quickly.
• Screener - screening of raw materials can occur at the beginning of the process or after granulation and grinding and is intended to separate by size. When sifting raw materials, the crushing process is optimized and energy is saved. Small raw materials do not require crushing. When sifting granules and grits, dust and small particles are separated, which improves the quality of the final product. Fine screenings are returned to the production line, preventing losses of raw materials.
• Sprayer - for applying liquid components and powders to granules after the granulation process. This process increases the energy value, ensuring better feed absorption.