Wood flour
Wood flour - dry crushed wood, the bulk (95%) which passes through the a sieve with a size of cells 1.25 x 1.25 mm. or less. Particles of wood flour, usually have an elongated shape, so the exact size is not regulated by them. When sifting they may be held in mesh diagonals, so their linear dimensions, of course, may be more linear size of the lumen of the sieve.
In view of the very large number of possible applications of wood flour in human economic activity, demand for it is growing, but production is growing rapidly.
The raw material for wood flour is often used lumpy waste of woodworking productions, chips and sawdust.
The properties and characteristics of wood flour.
The bulk density of wood flour and its color depends on wood species and the degree of crushing. The bulk density is usually in the range 100 ... 250 kg/m3, color - from light straw or light gray to dark brown.
Use:
- In the production of wood-plastic composites;
- Additive for kiln ceramics and brick (manufacture of porous bricks);
- In the manufacture of ceramic micro filters to filter the beer;
- In the enzymatic hydrolysis to obtain bioethanol, biobutanol, acetone, feed, agricultural animals and other products;
- As a component in the production of pigment titanium dioxide;
- Filler for natural and synthetic linoleum and linkrust;
- The basis for compounds based on thermosetting resins (phenoplasts, etc.), epoxy, polyester, etc. resins;
- Additive in porous abrasive products;
- Additive in plaster and finishing mixes;
- An additive in concrete and gypsum;
- The basis for ksilolit (wood-compound magnesian binder material);
- An additive in adhesives based on natural and synthetic glues;
- Part and raw material for various explosives;
- Filler in the manufacture of adhesives mastics and sealants (flooring, roofing, etc.);
- The basis for the filters and filter materials;
- Additive in the manufacture of steel and ferro-alloys;
- Additive in molding the mixture for the manufacture of molds;
- An additive in drilling fluids and grouting materials in the oil industry;
- Cleaning agent in the manufacture of leather and fur,
- Raw materials for production of sorbents;
- Raw material for activated carbon,
- Mild abrasive, polishing and cleaning agent in metal, for example, in the production of hardware and bearings, accessories, etc. (tumbling).
- Additive for coating of welding electrodes (cellulose electrode).