Development method of boulder gravel mineral deposits

FIELD: mining.

SUBSTANCE: method involves stripping operations, excavation and transportation of sands with bulldoser to vibration screen with further feed of sands to the receiving sump and further transportation to mineral processing equipment. Receiving sump is formed in the form of a pit drilled to the rock bed along the circuit of reserves and longitudinally separated with a pillar into two semi-pits: one is meant for sand storage, the other one is meant for boulders; screen is installed on sand supply side with possibility of its being moved along the pit with an inclination providing boulder movement to the second semi-pit.

EFFECT: increasing the efficiency of mining equipment at development of boulder gravel mineral deposits owing to extraction of boulders to specially prepared space.

3 cl, 2 dwg

 

The invention relates to the mining industry and can be used for Stripping and mining operations on the alluvial deposits of minerals using bulldozer-groharing units and floating production equipment.

Known radial-circular way to develop Sands bulldozers and wheel scrapers. In this way the breed with a distant relative to the hopper sections of the mining block layers are cut and transported scrapers, and neighbors plots bulldozers (Sulin GA Technique and technology of the placers in an open way. - M.: Nedra", 1974. S-213).

The disadvantages of this method are inefficient work wheel scraper when developing salonisti rocks, occurring often, because of the relatively small traction, implemented on wheels, big tire wear when interacting with the sharp edges of boulders and small size of the buckets.

The closest technical solution essential features adopted bulldozer mining method permafrost and seasonal freezing placers, consisting in layered trimming dozer blade thawed rocks and transporting it to the receiving bin with subsequent washing (Emel'yanov V.I. Technology bulldozer development of permafrost deposits. - M.: Nedra", 1976. Pp.163-177).

Weeks the action of this method are inefficient work when developing salonisti placers, a significant reduction in performance as mining and processing equipment due to the need to remove boulders.

The objective of the invention is to improve the performance of mining equipment in the development salonisti placer mineral deposits by cleaning boulders in a specially prepared space.

To achieve these objectives in method development salonisti alluvial deposits of minerals, including Stripping, excavation and transportation of sand dozer Assembly for vibrating screen with subsequent supply of sand in the receiving sump and further transported to the processing equipment, the receiving sump is formed in the trench, passed to the float, placer contour balance reserves and longitudinally separated completely into two polytrans: one for storing the Sands, the other for boulders, crashing establish feeder side of sand can move it along the trench with an incline, ensure the movement of boulders in the second polytrans.

Polytrans for storing sand, fill with water and a secondary recess Sands carry out mining floating means filing for mineral processing equipment.

Width palutena determined by the formula:

B1=Hp B(1-PinKp/hC,

where B1- width polytrans for storing Sands;

Hp- power of the Sands, m;

In - the width of a mining block, m;

Pin-the content of the boulders in placer, Douglas;

Kp- the rate of loosening fines Sands;

HC- the height of the pillar, m;

the width of polytrans for boulders determined by the following formula:

In2=NpPinKRVKC/hC,

where KRRM- the rate of loosening of the boulders in the dump;

KCthe fill factor space of the second polytrans;

in turn, the height of the pillar is determined by the formula:

hC=hp+hin+habout+hg,

where hppower of the sand in the first polytrans, m;

hb- a safe distance between the pontoon floating production equipment and the surface of the sand in polocrosse, m;

habout- the depth of precipitation floating production equipment, m;

hg- the height of the crest of the pillar, m

The essential features that distinguish the way of mining on the alluvial deposits from the nearest prototype, allow to obtain the following technical result:

additional alloys with a sand content of clay particles within the mining block will significantly increase produces lnost processing equipment when developing salonisti placer deposits;

- conducting mined on salonisti rocks with large production unit in difficult mining and geological conditions and thereby the exception of the placement of the flushing equipment within the career field;

- significant performance improvements mining equipment when developing salonisti placer deposits.

The essence of the proposed method of mining on the alluvial salonisti fields is illustrated by drawings, figure 1 shows a view in terms of layer-by-layer primary moving Sands bulldozer to vibration rumble, located on the slope of the mining ledge and secondary movement of sand, beneficiation equipment; figure 2 - General view.

Scheme development salonisti placer deposits include: 1 - receiving sump in the form of the trench; 2 - sand; 3 - pillar; 4 - polytrans for sand; 5 - polytrans for boulders; 6 - boulders; 7 - ramp; 8 - vibrating screen; 9 - bulldozer; 10 - mining floating craft; 11 - floating slurry pipeline.

After conducting Stripping along one side of the mining block are receiving sump in the form of trench 1, the depth of which is equal to power of mined sand 2, and trench 1 longitudinally separated entirely 3 two polytrans 4, 5. First polytrans 4 is a side feeder Sands 2 and designed the for their storage, and the second polytrans 5 - for boulders 6. When moving and dumping sand 2 with boulders 6 ramp 7 vibrating screen 8 9 bulldozer boulders 6, having a large particle size and Octanate, under the action of the reciprocating movements of the vibrating screen 8 roll down to the second polytrans 5, and Sands 2 fail in the first polytrans 4. Division of trench 1 whole 3 two polytrans 4, 5 separates Sands 2 and boulders 6 for further development of the Sands 2. First polytrans 4 flooding in order when placing sand 2 with the content of clay particles was softening clay, and for the subsequent extraction of sand 2 mining floating means 10. After storing a certain amount of sand 2 in the first polocrosse 4 using mine craft 10 produce the notch Sands 2 and their transport via pipeline 11 to the processing equipment. The placement of the ramp 7 on the roof Sands 2 allows you to place underneath vibrating screen 8. As the Sands mining 2 mining block the ramp 7 and vibrating screen 8 is moved along the trench 1.

1. Method development salonisti alluvial deposits of minerals, including Stripping, excavation and transportation of sand dozer Assembly for vibrating screen with subsequent supply of sand in receiving what is it ompth and further transported to processing equipment, characterized in that the receiving sump is formed in the trench, passed to the float, placer contour balance reserves and longitudinally separated completely into two polytrans: one for storing the Sands, the other for boulders, crashing establish feeder side of sand can move it along the trench with an incline, ensure the movement of boulders in the second polytrans.

2. Method development salonisti placer mineral deposits according to claim 1, characterized in that polytrans for storing sand filled with water and a secondary recess Sands carry out mining floating means filing for mineral processing equipment.

3. Method development salonisti placer mineral deposits according to claim 1, characterized in that the width palutena determined by the formula:
B1=HpB(1-PinKp/hC,
where B1- width polytrans for storing Sands;
Hp- power of the Sands, m;
In - the width of a mining block, m;
Pin- the content of the boulders in placer, Douglas;
Kp- the rate of loosening fines Sands;
hC- the height of the pillar, m,
the width of polytrans for boulders determined by the following formula:
In2=NpPinKRVKC/hC,
where KRV- coefficient razryhlenie the boulders in the blade;
KCthe fill factor space of the second polytrans,
in turn, the height of the pillar is determined by the formula:
hC=hp+hb+habout+hg,
where hppower of the sand in the first polytrans, m;
hb- a safe distance between the pontoon floating production equipment and the surface of the sand in polytrans, m;
habout- the depth of precipitation floating production equipment, m;
hg- the height of the crest of the pillar, m



 

Same patents:

FIELD: technological processes.

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FIELD: process engineering.

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1 ex, 1 tbl, 2 dwg

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2 dwg

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5 dwg

FIELD: mining industry.

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EFFECT: improved efficiency of mining due to intensification of disintegration of rock with complex physical and mechanical properties during dredging and placer mining.

2 dwg

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