CN103977887A - Method both for extraction of iron ore powder from sand of desert and for treatment of desert - Google Patents

Abstract

The invention provides a method both for extraction of iron ore powder from sand of a desert and for treatment of the desert. According to the method, extraction of iron ore powder and treatment of the desert are carried out at the same time, a part of corollary equipment for magnetic separation of iron ore powder is also applied to treatment of the desert, so extraction of iron ore powder and treatment of the desert are realized in one effort and dual benefits are obtained. Sand of all deserts contains iron ore powder; though the proportion of iron ore powder is small, the amount of sand is huge, extraction procedures are few, investment for equipment is small, operation energy consumption is low, ore dressing is directly carried out in the open air, high efficiency and a fast speed are realized, and cost performance of iron ore powder extraction is good. The method has the following advantages: the source of iron ore is broadened, and iron ore powder in desert sand is not a traditional iron ore source; a traditional iron ore mining manner is broken through, and with the method, iron ore powder mining procedures are substantially simplified, the variety of the number of desired equipment are small, and mining can be carried out with small investment; a part of money earned from extraction of iron ore powder from sand of the desert is used to treat the desert, so the problem that desert treatment incurs financial burden since desert treatment needs investment, but has no output is overcome, and desert treatment becomes a profitable project.

Description

From the sand in desert, extract the Iron Ore Powder method of Desert Control simultaneously

Technical field

The present invention relates to a kind of Iron Ore Powder method of Desert Control simultaneously of extracting from the sand in desert, adopt iron ore and carry out together with Desert Control, kill two birds with one stone, realize double benefit.

Background technology

At present, known traditional iron ore recovery method, need a lot of steps,---excavation, loading, transport iron ore---coarse crushing---middle fragmentation---fine crushing---magnetic separator magnetic separation Iron Ore Powder for one-level ball milling---secondary ball milling---that exploitation flow process is roughly as follows: fried iron ore mine, this iron ore exploitation mode needs multiple large-scale jumbo, equipment investment is huge, and operation energy consumption is very high, unfriendly to environment.

The iron ore deposit deficiency that China is traditional, need every year a large amount of iron ores of import, taking 2008 as example, 4.4356 hundred million tons, this year national imported iron ore stone of customs statistics, average price 137.07 dollar per tonnes, have spent 3784.6 hundred million RMB, the visible iron ore output value is huge, urgent need widens the vision, and finds new iron ore deposit, substituting import one.

Current global desertification is continuing, and desert area is expanding with the speed of ten thousand square kilometres of annual 5-7, and Deserts in China area is expanding with the speed of 2460 square kilometres every year on average; Current known desert control method is a lot, and Desert Control only has input, there is no output, becomes financial burden, so be badly in need of the new approaches of Desert Control, adopts new mode, the burden of Desert Control is become to the project of money-making.

Summary of the invention

In the sand in desert, more or less all contain Iron Ore Powder.I as a child played magnet in sand, know that magnet can be drawn onto a lot of Iron Ore Powder from sand, why do not know at that time has Iron Ore Powder in sand, do not go deeply to think this problem yet, learned afterwards geographical knowledge, know that the earth itself is exactly the celestial body that iron-holder is higher, tellurian rock is all also ore, more or less all contain iron ore, rock is through the Nature slacking of 1 years, accompany each other cold and hot, expose to the weather and drench with rain under the effect of water punching etc., break gradually for stone, and then continue step by step weathering and attenuate and diminish, become sand, at current, under wind drives, these sands have collected in desert.The Nature has been worked 1 years as miner, helps people to do the arduous operation in Ji road above that Iron Ore Powder is exploited, that ore grinding is good, has been kept in desert.

The present invention is in order to solve three difficult problems in above-mentioned background technology: 1, solve traditional iron ore exploitation step is many, need device category and the quantity problem how investment is huge, equipment operation energy consumption is very high; 2, solve the problem of conventional iron ore resources deficiency; 3, solve current Desert Control and only have input, there is no output, become the problem of financial burden.

The present invention addresses the above problem adopted technical scheme: from the sand in desert, magnetic separation Iron Ore Powder is carried out together with control of desert simultaneously, the part corollary equipment of magnetic separation Iron Ore Powder is used for Desert Control, the steps include: 1) position of selecting the convenience such as desert edge, underfooting, sand dune that the sand of magnetic separation and the sand of not magnetic separation are separated, select to install the orientation of magnetic separation Iron Ore Powder corollary equipment, the sand of not magnetic separation is mixed with the sand of magnetic separation when avoiding wind or equipment operation;

2) systematically the sand magnetic separation in desert one time, the sand of magnetic separation and the sand of not magnetic separation are separated, avoid sand to be repeated magnetic separation;

3) the sand of magnetic separation pave, compacting, fixing, just plant upper suitable plant if water is convenient, realize the double benefit that extracts Iron Ore Powder and Desert Control.

The invention has the beneficial effects as follows: 1, with the contrast of traditional iron ore exploitation, from the sand in desert, extract that Iron Ore Powder step greatly reduces, device category invest less little, equipment operation energy consumption is low, economic benefit is huge; 2, large scale system ground, sand magnetic separation one time, does not allow the sand with not magnetic separation of magnetic separation mix, and can utilize to greatest extent sand resource, avoids repetition magnetic separation, lowering energy-saving; 3, adopting the method has not been to have utilized traditional iron ore deposit, but utilize the huge sand of quantity in desert, the low-grade iron ore powder that sand has been equivalent to crush, only need magnetic separation one step can select high grade iron breeze for ironmaking, widen iron ore source, the problem of conventional iron ore resources deficiency can be solved, several hundred billion circle RMB for imported iron ore can be saved every year; 4, solve current Desert Control and only have input, there is no output, become the problem of financial burden.A part of Desert Control of the money of earning by extraction Iron Ore Powder, does not need to spend the national money just can control of desert is good, Desert Control is spent to become and extract Iron Ore Powder and make money, and supports war to fight; 5, organize manpower and materials to remove desert magnetic separation Iron Ore Powder Desert Control simultaneously by a part for the money for imported iron ore, a lot of jobs can be provided, pull economic development, improve environment; 6, know the fine iron breeze of China in can large scale mining desert when external iron ore company, want to appreciate just difficult, continue the imported iron ore saving substantial contribution of also demanding a lower price.

The following describes feasibility of the present invention: in propria persona test to Tengger desert, observing sand color is yellowish-brown, the inside is mingled with the grains of sand of black, these black grains of sand are exactly magnetic iron ore particulate, namely ferriferrous oxide particles, take magnet in sand, to roll, just suct the magnetite powder of a black.In desert, to extract Iron Ore Powder and whether calculate economically in order to check, do following experiment: the free-hand ferrite magnetite of taking a bulk, in sand, roll, after being filled black Iron Ore Powder, smear with hand, be collected in sack, continue one hour like this, can collect 11.6 kilograms of magnetite powders, chemically examine its iron-holder 62% left and right, one kilogram is worth 0.75 circle left and right, calculate a people work within 8 hours, can extract 69.6 circle RMB Iron Ore Powder, free-hand work gets final product monthly income 2088 circles, if 12 hours dutys, the free-hand work of people gets final product monthly income 3132 circle RMB, more to one's profit, if employing plant equipment, can hundreds and thousands of times raise the efficiency, just more to one's profit economically.

Desert iron-holder estimation: taking Tengger desert as example, 4.27 ten thousand square kilometres of areas, 85 meters of sand bed average thickness, 1.6 tons/cubic metre of averag densities, be easy to the magnetite powder that a step can magnetic separation 62% left and right out and account for 0.282% of sand weight, if systematically this desert magnetic separation one time, hundred million tons of the fine iron breeze amount that can select: 42700*1000*1000*85*1.6*0.282%=163.76, can also magneticly elect the weak magnetism breeze of iron-holder 30% left and right and the mixture 0.826% of manganese ore powder, after ball milling, can magneticly elect again mixture 0.36% left and right of fine iron breeze and the manganese ore powder of iron-holder 62% left and right, total amount is: hundred million tons of 42700*1000*1000*85*1.6*0.36%=209, can be used for smelting the including Mn-Fe alloy that value is higher.Extractible fine iron breeze amount is: hundred million tons of 163.76+209=372.76 are 84 times of imported iron ore stone total amount in 2008, are worth 3784.6 hundred million * 84=,318,051 hundred million, approximately 31.8 trillion circle RMB.

Be connected with Tengger desert, also having a larger desert---Badanjilin Desert, this desert composition and Tengger desert are basically identical, and burial depth is larger, and iron-holder is more, if extracted, China does not need imported iron ore stone for 200 years yet.Also have a huger Takla Makan Desert in Xinjiang, 33.76 ten thousand square kilometres, burial depth is large, can find data iron-holder 2% left and right, so fine iron breeze content is huge, within more than 1000 year, imported iron ore stone is not enough yet in China.

Detailed description of the invention

Implementation process mainly contains following step:

1, in desert, look for suitable position, such as desert edge, or underfooting, sand dune, meet traffic, erection unit conveniently, be convenient to transport the Iron Ore Powder extracting, be convenient to the sand of magnetic separation separated with the former sand in desert of magnetic separation not, like this can disposable systematically magnetic separation one time, avoid the sand of magnetic separation to mix with the sand of not magnetic separation, thereby avoid repetition magnetic separation.

2, in the arid desert area, choose more than 60% fine iron breeze of iron-holder with dry-type magnetic extractor and corollary equipment thereof, and the weak Iron Ore Powder of the low magnetic of iron-holder and the mixture of manganese ore powder; Choose more than 60% fine iron breeze of iron-holder at the region wet magnetic separator and the corollary equipment thereof that have water, and the weak Iron Ore Powder of the low magnetic of iron-holder and the mixture of manganese ore powder.

3, magnetic separation again after the mixture ball mill grinding of the weak Iron Ore Powder of low iron-holder magnetic and manganese ore powder, the concentrated breeze of selecting is ferrimanganic mixing ore deposit, is applicable to smelting the including Mn-Fe alloy that value is higher.

4, the sand of magnetic separation and the sand of not yet magnetic separation are separated, turn on one side, be bulldozed, compacting, fixing, if water intaking is convenient, just plant upper suitable plant, extract like this Iron Ore Powder carries out together with Desert Control process, extract the double control of desert equipment that does of equipment of Iron Ore Powder, with the part arrangement desert terrain Desert Control of the money of earning, not only can not endanger environment, can also stop desert to expand, expand desert afforestation area, optimize the environment, the burden that Desert Control was spent has in the past been solved, can also make money, kill two birds with one stone, calculate economically.

5, said process scale is large, in desert, draw multiple subregions, multiple enterprises and contract entered into by an individual subregion one by one that country is authorized, the favourable desert of environment is utilized to mode with institutional guarantee, after extracting Iron Ore Powder, the well-done enterprise of Desert Control is with individual, can go ahead, do badly, disqualification.

Claims (2)

1. from the sand in desert, extract the Iron Ore Powder method of Desert Control simultaneously, it is characterized in that: magnetic separation Iron Ore Powder is carried out together with control of desert from the sand in desert simultaneously, the part corollary equipment of magnetic separation Iron Ore Powder is used for Desert Control.

2. the Iron Ore Powder method of Desert Control simultaneously of extracting from the sand in desert according to claim 1, is characterized in that the method includes the steps of:

1) position of selecting the convenience such as desert edge, underfooting, sand dune that the sand of magnetic separation and the sand of not magnetic separation are separated, select to install the orientation of magnetic separation Iron Ore Powder corollary equipment, the sand of not magnetic separation is mixed with the sand of magnetic separation when avoiding wind or equipment operation;

2) systematically the sand magnetic separation in desert one time, the sand of magnetic separation and the sand of not magnetic separation are separated, avoid sand to be repeated magnetic separation;

3) the sand of magnetic separation pave, compacting, fixing, just plant upper suitable plant if water is convenient, realize the double benefit that extracts Iron Ore Powder and Desert Control.