The principle of making powdered milk is as much as possible the evaporation of water content of milk by heating (drying) and through the stages of the process in order to get good results.
Stage of the process in the manufacture of milk powder, according Hadiwiyoto (1983) is as follows:
a. Pre-Treatment
Performed pretreatment include filtering or clarification, separation and standardization. Screening aims to separate foreign objects found in milk, such as dust, sand, feathers. Clarification is essentially the same as filtering, except that the clarification did not use a cloth filter filter but by centrifugation using CLARIFIER. Separation is intended to separate the milk into two components, namely skimmed milk and cream using a separator (Adnan, 1984). Separation aims to make the same milk composition by mixing milk-milk until homogeneous (Hadiwiyoto, 1983). The results of the pretreatment is condensed milk.
b. Heating
Before the drying process, carried out the process of concentration of milk by way of preliminary heating. Destination preliminary warming is evaporating some of the water contained by the milk until it reaches levels of approximately 45-50% just by using the evaporator and used to heat the air temperature from 65 to 177 ° C depending on the type of products made
(Hadiwiyoto, 1983).
c. Drying Process
Condensed milk drying process carried out by the type of spray dryer (spray dryer) and the type of cylinder (drum dryer). Condensed milk or dikabutkan sprayed with nozzle in a gust of hot dry air forcibly brought milk grains are very small until the grains finer powder (Williamson and Payne, 1993). Dry milk powder expelled from the spray dryer, while the hot air out from the side. Dry milk powder is shipped with the heat recovered by the cyclone separator or with a catch into the cloth bags or filters.
d. Packaging
After the drying process to be completed powdered milk, made the process of packaging. Milk powder is packaged and sold in the form of sachets / box or tin.
Stage of the process in the manufacture of milk powder, according Hadiwiyoto (1983) is as follows:
a. Pre-Treatment
Performed pretreatment include filtering or clarification, separation and standardization. Screening aims to separate foreign objects found in milk, such as dust, sand, feathers. Clarification is essentially the same as filtering, except that the clarification did not use a cloth filter filter but by centrifugation using CLARIFIER. Separation is intended to separate the milk into two components, namely skimmed milk and cream using a separator (Adnan, 1984). Separation aims to make the same milk composition by mixing milk-milk until homogeneous (Hadiwiyoto, 1983). The results of the pretreatment is condensed milk.
b. Heating
Before the drying process, carried out the process of concentration of milk by way of preliminary heating. Destination preliminary warming is evaporating some of the water contained by the milk until it reaches levels of approximately 45-50% just by using the evaporator and used to heat the air temperature from 65 to 177 ° C depending on the type of products made
(Hadiwiyoto, 1983).
c. Drying Process
Condensed milk drying process carried out by the type of spray dryer (spray dryer) and the type of cylinder (drum dryer). Condensed milk or dikabutkan sprayed with nozzle in a gust of hot dry air forcibly brought milk grains are very small until the grains finer powder (Williamson and Payne, 1993). Dry milk powder expelled from the spray dryer, while the hot air out from the side. Dry milk powder is shipped with the heat recovered by the cyclone separator or with a catch into the cloth bags or filters.
d. Packaging
After the drying process to be completed powdered milk, made the process of packaging. Milk powder is packaged and sold in the form of sachets / box or tin.
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