Heavy beet separation

Heavy beet separation is a mechanical separation process based on the different densities of the substances to be separated. It is a special form of the swim / sink procedure .

Principle of the procedure

The heavy beet is a suspension of water and fine particles of heavy matter, the density of which can be precisely adjusted by changing the ratio of water to heavy matter. If the mixture to be separated is added to the heavy beet, the specifically lighter substances float, while the specifically heavier substances sink. Which substances can be removed separately as floating or sinking material is regulated by the variable density of the heavy beet. The turbidity must be kept in constant motion so that the heavy particles do not settle on the bottom of the container. Often the water is allowed to flow through the container from the bottom to the top (upflow sorter). Parts of the mixture to be separated can also take over the function of the heavy material in the pulp.

Areas of application

Heavy beet separation is often used to separate various mineral substances. This includes the separation of the inorganic components in household waste , the processing of mining products, e.g. B. coal, or from soils. Also for removing organic contamination from building materials such as B. gravel, heavy beet separation is used. The selectivity is very high in this process, so it is also possible to separate substances whose density is relatively similar, e.g. B. Non-ferrous metals , glass and ceramics .

literature

• Klaus Sattler, Jürgen Emberger: Treatment of solid waste. Avoid, recycle, collect, dispose of, remediate. Procedure - technical implementation - legal basis. 4th, revised edition. Vogel Buchverlag, Würzburg 1995, ISBN 3-8023-1511-1 .