The method of formation of coal piles in permafrost
The invention relates to the mining industry and can be used for storage of coal, prone to spontaneous combustion. The technical result is to develop a method that provides a longer pile formation fossil. This method involves the placement of minerals on the basis of the stack, the seal of coal wheels of dump trucks. While the base of the pile is placed on a slightly inclined plane surface and obvarovivaut outline, with the onset of the cold period of the year proparaguay base with the surface, removing snow, then must the ice layer thickness of 15-20 cm and close it the insulating layer, which is directly before laying the coal is removed and close them formed part of the pile. 2 Il.
The invention relates to the mining industry, in particular, to methods of forming coal piles in permafrost.
There is a method of protecting piles of solid minerals from self-heating and spontaneous combustion, involving separation of the coal to small and large factions and their separate storage .
The disadvantage of this method is the complexity of oppa, including the placement of minerals on the basis of the stack and seal coal wheels of dump trucks - prototype .
The disadvantage of this method is the possibility of forming a pile of coal only in winter at negative air temperatures.
The technical challenge was to develop a method that provides a longer pile formation fossil.
This object is achieved in that the base of the pile is placed on a slightly inclined plane surface, obvarovivaut outline, with the onset of the cold period of the year proparaguay base with the surface, removing snow, then must the ice layer thickness of 15-20 cm, closed the insulating layer, which is directly before laying the coal is removed and close them formed part of the pile.
Introduced in the formula of the invention, a significant sign that the base of the pile is placed on a slightly inclined plane surface, provides a flow of water in the case of melting ice, nevrogennogo on the ground.
A significant sign that the basis obvarovivaut contour, prevents the flow of air into the stack from the sides.
A significant characteristic about the s to cool the active layer at the base and to provide freezing it with permafrost in a single frozen array.
A sign that the basis must be the ice layer thickness of 15-20 cm, necessary to ensure that in the case of self-heating of coal to reduce its temperature, since the phase transition of ice-water is considerable absorption of heat.
A significant sign that the ice cover insulating layer, creates the conditions for the preservation of ice at the beginning of the warm season.
A significant sign that the insulating layer immediately before laying the coal is removed and close them formed part of the stack, allows you to place the coal on the ice, and the top of the pile to keep from heating up in the summer.
The essence of the method is illustrated by drawings, where Fig 1 shows the process of forming a pile of coal, in Fig.2 is a cross section of a pile of coal.
Conventions on the drawings: 1 is a stack of coal, 2 - inclined plane, 3 is the base of the pile, 4 - shaft, 5 - layer ice; 6 - insulating layer.
The method of forming a pile of coal is as follows. Coal companies located in the Far North in permafrost, in winter and early summer before the opening of navigation stockpiling coal in internavigational piles. For the location of a pile of coal 1 pick order example NR, bulldozer technique to shovel shaft 4. These shafts are required in order to exclude the admission of air into the stack 1 from the sides. At the onset of the cold season basis 3 proparaguay, which removes snow at his appearance, and then must the ice layer 5 with a thickness of 15-20 cm, the ice is necessary, as in the case of self-heating of coal it starts to melt. and during the phase transition of ice-water absorption heat very much. The ice layer 5 is placed a heat-insulating layer 6, which you can use sheets of foam, sawdust and other materials. In the process of formation of the pile 1 immediately before laying coal heat insulating layer 6 is removed and transferred to the formed portion of the pile 1.
In the run method, the formed stack 1 mineral is located on the base 3 frozen rock, surrounded by ramparts 4, preventing the flow of air from the sides, and covered with the insulating layer 6.
The advantages of this method are:
- exclusion of self-heating and spontaneous combustion of coal,
- no demolition of coal dust from the surface of the pile,
- easy formation of a pile of coal.
IP style="text-align:center; margin-top:2mm;">Claims
The method of forming a pile of coal in the conditions of permafrost, including the placement of minerals on the basis of the stack, the seal of coal wheels of dump trucks, characterized in that the base of the pile is placed on a slightly inclined plane surface and obvarovivaut outline, with the onset of the cold period of the year proparaguay base with the surface, removing snow, then must the ice layer thickness of 15-20 cm and close it the insulating layer, which is directly before laying the coal is removed and close them formed part of the pile.
FIELD: materials handling facilities.
SUBSTANCE: invention relates to devices for taking loose materials from pile and stowing them in layers differing in content of useful component in each layer with simultaneous averaging in process of taking material from pile and it can be used in open stores. Proposed loose material stower-gripper has boom of gripper and boom of stower of lift-lower type turnable in horizontal plane by slewing circle installed on base and drives to turn booms of gripper and stower. Slewing circle is made in form of fixed rings rigidly secured to each other and to frame of base, two coaxially arranged movable rings with gear rims resting of fixed rings through solids of revolution. Movable rings are non-connected mechanically, one movable ring being furnished with external teeth rim coupled with gripper boom turning drive, and the other is provided with internal teeth rim coupled with stower boom turning drive. Each toothed rim has independent self-contained system to regulate geometrical parameters of mating of solids of revolution with movable and fixed rings. Base be made in form of self-propelled chassis or stationary portal. Gripper boom has gripping member of rotary or scraper type.
EFFECT: reduced overall dimensions of stower-gripper, facilitated maintenance.
4 cl, 4 dwg
FIELD: metallurgical, construction and fuel and power enterprises.
SUBSTANCE: method relates to blending of loose material in pile. When two flows of loose material are used, filling of pile is carried out in layers along ring divided into three sectors. In first sector filling is done by shuttle arc movement to form lower part of pile by first flow. In second sector upper part of pile is filled by shuttle arc movements onto lower part of pile made by first flow by second flow with provision of longitudinal shifting between upper and lower parts of pile and forming ready pile in second sector. In third sector, end unloading along ring towards second sector is carried out simultaneously.
EFFECT: increased quality of blending at use of one-layer pile.
FIELD: machine building.
SUBSTANCE: invention is related to equipment for loosening of bulked materials and may be used for crushing of large pieces of material on above-bunker grates. Milling-and-crushing machine includes automotive trolley (1), in body of which actuator is installed with cutters (2), which is made of two identical cylindrical rotors (3, 4) that are coaxially installed on their bearing supports (7, 8) and may rotate independently from each other. Cutters on rotors are installed along helical lines in opposite directions from the middle of every rotor. Bearing supports of cylindrical rotors installed in point of rotor end sides adjacency are covered with jacket in the form of cylinder with diametre equal to rotors diametre.
EFFECT: invention excludes effect of one drive at the other one, reduces energy intensity of unloaded material damage, reduces metal intensity and increases machine stability.
3 cl, 2 dwg