When working with wood, there is always waste. Crushers are aggregates that convert large pieces of wood into a fine mixture. The use of machines can increase labor productivity and reduce workers' injuries.
Help! The automation of raw materials processing by the forestry industry has reduced the amount of recycled waste by 50%.
The tree chipper is used in production and garden plots. It can be of several types:
Plants can be mobile or stationary. A large amount of waste is processed by powerful crushers. Subsidiary farms can cope with mobile units with low power.
The equipment will help grind wood waste after pruning branches, remnants of building materials, old furniture. The crushed raw materials are used for mulching or fertilizing the beds.
You can use environmentally friendly types of wood for the soil. Furniture waste contains harmful components. They cannot be used to fertilize plants.
Chipping wood, branches, bushes, felling residues is an important task in forestry and parks. On large volumes of work, such as laying pipelines, road construction, arranging fire-prevention glades, clearing power lines, processing agricultural areas, wheeled and caterpillar mulchers are effectively used. Shredding mulchers can be installed as attachments on tractors, mini-loaders and excavators. For industrial clearing, specialized wheeled mulchers are used, for example the Kirovets mulcher or MF-705. They are adapted to work in a dusty area, they are fireproof, ergonomic, and highly productive.
Unlike mulchers, which leave mulch mixed with the ground (small branches, stumps, chips of unsorted size), wood chippers are used to solve the problem of getting chips or sawdust and taking them out of the felling site. Structurally, wood chippers differ in a chopping body with fixed knives. Disc, drum and drum-rotary grinders (wood chips) are produced. The wide range is created by different chopping arm drive, window size and material feed to the work table (manual feed and crane feed). Disc and drum shredders have the same capabilities to drive the chopping body:
The Arctic desert is a barren land in permafrost covered with glaciers covering 55,000 square meters. km. The average ice thickness is 2 m. In summer the temperature does not exceed + 5 degrees, and in winter it drops to 50, there is little precipitation.
Vegetation, extremely thin and sparse, is represented by mosses, lichens and grasses. There are few lakes in the territories occupied by the icy desert. The bowels of the Arctic (Arctic is translated as bear) contain undeveloped reserves of energy resources - oil and gas. The territory of the Arctic desert has been insufficiently explored.
Natural conditions of the Arctic desert zone
To determine the natural conditions of the Arctic desert, below is a brief description and table of the main factors (geographic location, relief, soil, climate, natural resources, flora and fauna) that affect the life of the people of this natural zone.
The natural zone of the Arctic desert is located above 75 ° north latitude and is adjacent to the North Pole of the Earth. It covers a total area of over 100 thousand km². The Arctic Desert covers Greenland, the North Pole and several islands, many of which are inhabited by humans and animals.
The relief of the Arctic desert consists of various physical features: mountains, glaciers and flat areas.
One of the most practical and beautiful types of mosaics is smalt. The first Russian technologies for the manufacture of glass under this name were developed by M. riot police in the middle of the 18th century. And the most famous works of that time were the huge paintings that adorned St. Isaac's Cathedral. The basic principles of creating smalt have remained the same, but modern production methods have made their own adjustments. The possibilities of using new methods of processing raw materials and materials have been significantly expanded.
Smalt in architecture is a way of making an interior or exterior decoration unique and sophisticated. This type of mosaic is used to decorate temples, palaces, and public buildings. Admirers of the classics and monumentality use smalt in private buildings. Sections of walls, fireplace portals, pools, sculptures are decorated with smalt mosaics. Exclusive panels and beautiful paintings are created from it.
A contemporary artist can choose a color from a huge number of shades that salts and oxides of various metals give to glass. And all this is glass smalt.
1. It glows from within the material itself.
2. Very durable (Roman smalt mosaics have not lost their attractiveness over the millennia). It is not afraid of dampness and frost, which allows it to be used as a versatile outdoor and indoor finishing material.
3. The traditional size of the elements is 5 x 5 x 5 mm. But it can be any geometric shapes - ovals and different polyhedra. To obtain such shapes, glass chips are heated and molded. Now it becomes clearer what smalt is.
Smalt itself is quite expensive, and the manual labor that is used in the manufacture of the product further increases the price.
For the manufacture of mosaic panels, special ceramic tiles are often used, crushed into small pieces. However, the most traditional option for compiling decor is the use of smalt. This material is an opaque colored glass that is applied to adhesives in the process of drawing up decorative paintings.
Let's consider the main stages of industrial production of this raw material: