CN202369624U

CN202369624U - Microbiological leaching tailings heavy metal reactor

Info

Publication number: CN202369624U
Application number: CN2011205257199U
Authority: CN
Inventors: 李东伟; 杨克; 李斗
Original assignee: Chongqing University
Current assignee: Chongqing University
Priority date: 2011-12-15
Filing date: 2011-12-15
Publication date: 2012-08-08
Anticipated expiration: 2021-12-15

Abstract

The utility model discloses a microbiological leaching tailings heavy metal reactor, which comprises an outer tube, an inner tube and a three-phase separator, wherein the inner tube is a hollow tube body with openings at to and bottom, the inner tube is vertically arranged in the outer tube, in addition, the upper end and the lower end of the inner tube are suspended, the bottom of the outer tube is provided with an air inlet hole right against the inner tube, the three-phase separator comprises a conical inner cavity and is positioned above the inner tube, and in addition, an open opening of the conical inner cavity is right against the inner tube. The air inlet hole arranged at the bottom of the outer tube is used for introducing the air as the motive power, ore pulp is stirred to reach the uniform mixing goal, and in addition, the ore pulp forms gas-solid-liquid three-phase internal circulation inside the reactor under the effect the inner tube and the three-phase separator, so reactants in the reactor are always in a dynamic mixing process, the microbiological leaching of various elements in the tailings can be favorably realized, meanwhile, the reaction dead corner is avoided to the maximum degree, the evaluation precision of the reactor is high, the heavy metal leaching rate is high, the oxygen consumption is low, and the ore leaching period is short.

Description

Mikrobe lixiviate mine tailing heavy metal reactor drum

Technical field

The utility model relates to a kind of device of removing metallic ore mine tailing heavy metal contaminants, is specifically related to a kind of mikrobe lixiviate mine tailing heavy metal reactor drum.

Background technology

The mine tailing of metallic ore is meant the solid waste that stays after the ore dressing; Mine tailing not only appropriation of land destroys surface vegetation; Cause geologic hazard; Simultaneously mine tailing produces a large amount of acid waste water that is rich in heavy metal under decomposition decay and microbial process, causes storing up regional soil and underground water receives serious pollution.The mine tailing heavy metal contaminants is main with chromium, cadmium, zinc, lead, mercury, arsenic, nickel, copper, manganese and compound thereof mainly; Heavy metal contaminants can pass through approach such as digestive tube absorption, respiratory tract suction, skin absorption and get into human body; After heavy metal contaminants gets into human body; Can cause people's headache, dizziness, insomnia, forgetful, mentally deranged, arthralgia, calculus, cancer (like liver cancer, cancer of the stomach, intestinal cancer, bladder cancer, mammary cancer, prostate cancer and Blackfoot Disease and teratogenesis) etc., especially to the cell of Digestive tract, urinary system, internal organs, skin, bone, neural destroy very serious.

Therefore, how safely and effectively the heavy metal in the metallic ore mine tailing to be removed environment and the social concern that promptly becomes the urgent need solution.The removal method of mine tailing heavy metal contaminants mainly is in mine tailing, to add the chelating agent curing at present, and is costly, wastes time and energy.Utilize mikrobe and mine tailing particle hybrid reaction in the prior art, thereby lixiviate goes out the method for heavy metal in the mine tailing, but lack a kind of high efficiency reactor drum, cause the heavy metal extraction rate not high, it is long to soak the ore deposit cycle.

Summary of the invention

In view of this, the utility model provides a kind of mikrobe lixiviate mine tailing heavy metal reactor drum, and this reactor drum assessment precision is high, the heavy metal extraction rate is high, oxygen-consumption is low, soak ore deposit cycle weak point, the labor capacity that can reduce a staff.

The mikrobe lixiviate mine tailing heavy metal reactor drum of the utility model; Comprise urceolus, inner core and triphase separator; Said inner core is the hollow cylinder of upper and lower opening, said inner core vertically be arranged in the urceolus and inner core two ends are unsettled up and down, said outer tube bottom has the air inlet port over against inner core; Said triphase separator comprises conical internal cavity, and said triphase separator is positioned at the uncovered over against inner core of inner core top and conical internal cavity.

Further, said triphase separator is a funnel shaped, and is said funnel shaped uncovered over against inner core;

Further, said air inlet port is equipped with the core aeration head of microvoid structure, and said core aeration head is communicated with gas meter and pneumatic pump successively;

Further, the quantity of said air inlet port is four;

Further, said outer tube bottom has outage, and said outage is communicated with the leach liquor receiving tank;

Further, said inner core and the coaxial setting of urceolus.

The beneficial effect of the utility model is: the air inlet port bubbling air of the outer tube bottom of the utility model utilization is as power; Stir ore pulp (solution and mine tailing particle) to reach the purpose that mixes; And ore pulp forms gas-solid liquid three-phase internal recycle at inside reactor under the effect of inner core and triphase separator, make that the reactant in the reactor drum is in a dynamic blended process all the time; Help mikrobe and leach the various elements in the mine tailing, maximum possible has avoided the reaction dead angle simultaneously; This reactor drum assessment precision is high, the heavy metal extraction rate is high, oxygen-consumption is low, soak ore deposit cycle weak point, has reduced staff's labor capacity.

Description of drawings

For the purpose, technical scheme and the advantage that make the utility model is clearer, will combine accompanying drawing that the utility model is done further to describe in detail below, wherein:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the circulation theory synoptic diagram of gas-solid liquid three-phase internal recycle in the reactor drum of the utility model;

Fig. 3 is mine tailing particle and a bubble motion process synoptic diagram in the reactor drum of the utility model;

Fig. 4 is the diffusion and the dissolution process synoptic diagram of the reactor drum air of the utility model.

Embodiment

Below will be with reference to accompanying drawing, the preferred embodiment of the utility model is carried out detailed description.

Fig. 1 is the structural representation of the utility model; As shown in the figure; The mikrobe lixiviate mine tailing heavy metal reactor drum of the utility model comprises urceolus 1, inner core 2 and triphase separator 3, and said inner core 2 is the hollow cylinder of upper and lower opening; Said inner core 2 vertically be arranged in the urceolus 1 and inner core about in the of 2 two ends unsettled; Said urceolus 1 bottom has the air inlet port 11 over against inner core 2, and said triphase separator 3 comprises conical internal cavity 31, and said triphase separator 3 is positioned at the uncovered over against inner core 2 of inner core 2 tops and conical internal cavity 31.

The utility model utilizes air inlet port 11 bubbling airs of urceolus 1 bottom as power, stir ore pulp (solution and mine tailing particle) reaching the purpose that mixes, and ore pulp is under the effect of inner core 2 and triphase separator 3; Form gas-solid liquid three-phase internal recycle at inside reactor; The circulation theory of gas-solid liquid three-phase internal recycle is as shown in Figure 2, and filled circles is represented the mine tailing particle among the figure, and open circles is represented bubble; Solid arrow is represented liquid fixed double phase flow, and dotted arrow is represented air-flow.

Fig. 3 is mine tailing particle and a bubble motion process synoptic diagram in the reactor drum of the utility model, and filled circles is represented the mine tailing particle among the figure, and open circles is represented bubble; Fig. 3 (a) expression be the initial not bubbling air of reactor drum the time situation, the mine tailing particle all is deposited on reactor bottom; Along with air feeds from outer tube bottom, the mine tailing particle in the reactor drum is stirred, because air inlet port is over against inner core; Therefore bubble concentrates on inner core; But the urceolus scope also has a spot of bubble, and the mine tailing particle moves upward from inner core under the drive of biphase gas and liquid flow, shown in Fig. 3 (b); When the mine tailing particle rises to the triphase separator scope, under the stopping of triphase separator conical internal cavity, change heading, shown in Fig. 3 (c); Ore pulp in the reactor drum (solution and mine tailing particle) flows beginning under the acting in conjunction of triphase separator and inner core in the urceolus zone, and direction has just formed gas-solid liquid three-phase internal recycle, shown in Fig. 3 (d) down thus.

Ore pulp realizes that the power of internal recycle mainly comes from the stirring of gas in the reactor drum of the utility model; But if be that not only the thalline damage to bacterium is bigger in simple mixing stirring; Be unfavorable for that microorganic adhesion such as bacterium at mineral surface, make the part mine tailing to be reacted fully but also can in reactor drum, produce the dead angle, and the utility model has formed gas-solid liquid three-phase internal recycle by the effect of inner core and triphase separator; Make the reactant in the reactor drum be in a dynamic blended process all the time; Help mikrobe and leach the various elements in the mine tailing, simultaneously maximum possible avoided the reaction dead angle, and triphase separator has prevented the loss that ore pulp splashes and causes in the aeration process; Adhesion bubble has above that kept the gaseous exchange in the reactor drum unobstructed also by the wall physical sepn of triphase separator simultaneously.

In the present embodiment, said triphase separator 3 is a funnel shaped, and is said funnel shaped uncovered over against inner core 2; Certainly, triphase separator also can be other shape and structure, as long as it has the ore pulp of stopping motion, separates the triphasic conical internal cavity of gas-solid liquid.

As the further improvement of the utility model, said air inlet port 11 is equipped with the core aeration head 4 of microvoid structure, and said core aeration head 4 is communicated with gas meter 5 and pneumatic pump 6 successively; Core aeration head 4 is set; Making air be divided into the minimum microbubble of several diameters spreads; The also corresponding increase of its area that contacts with liquid is more conducive to air and in liquid, dissolves, and bubble generation simultaneously is up to move from reactor bottom; Because the reducing gradually of bubble external hydraulic makes that diameter increases the reactor drum of overflowing at last gradually in its process that makes progress; When microbubble in the process that rises, air is being borrowed the dissolving of realization oxygen and carbonic acid gas in the molecule gap that molecular motion gets into liquid, the two is respectively energy derive and the carbon source that bacterium is kept self of the correlated response of bacterial oxidation mine tailing; The diffusion and the dissolution process of air are as shown in Figure 4, figure hollow core circle expression bubble.

In the present embodiment, the quantity of said air inlet port 11 is four; Said urceolus 1 bottom has outage (not drawing among the figure), and said outage is communicated with the leach liquor receiving tank; Said inner core 2 and urceolus 1 coaxial setting; Urceolus 1, inner core 2 and triphase separator 3 can adopt synthetic glass to make.

Explanation is at last; Above embodiment is only unrestricted in order to the technical scheme of explanation the utility model; Although the preferred embodiment through with reference to the utility model is described the utility model; But those of ordinary skill in the art should be appreciated that and can make various changes to it in form with on the details, and the spirit and the scope of the utility model that does not depart from appended claims and limited.

Claims

1. mikrobe lixiviate mine tailing heavy metal reactor drum; It is characterized in that: comprise urceolus (1), inner core (2) and triphase separator (3); Said inner core (2) is the hollow cylinder of upper and lower opening; Said inner core (2) vertically be arranged in the urceolus (1) and inner core (2) two ends are unsettled up and down; Said urceolus (1) bottom has the air inlet port (11) over against inner core (2), and said triphase separator (3) comprises conical internal cavity (31), and said triphase separator (3) is positioned at the uncovered over against inner core (2) of inner core (2) top and conical internal cavity (31).

2. mikrobe lixiviate mine tailing heavy metal reactor drum according to claim 1, it is characterized in that: said triphase separator (3) is funnel shaped, and is said funnel shaped uncovered over against inner core (2).

3. mikrobe lixiviate mine tailing heavy metal reactor drum according to claim 1 and 2; It is characterized in that: said air inlet port (11) is equipped with the core aeration head (4) of microvoid structure, and said core aeration head (4) is communicated with gas meter (5) and pneumatic pump (6) successively.

4. mikrobe lixiviate mine tailing heavy metal reactor drum according to claim 3, it is characterized in that: the quantity of said air inlet port (11) is four.

5. mikrobe lixiviate mine tailing heavy metal reactor drum according to claim 1 and 2 is characterized in that: said urceolus (1) bottom has outage, and said outage is communicated with the leach liquor receiving tank.

6. mikrobe lixiviate mine tailing heavy metal reactor drum according to claim 1 and 2 is characterized in that: said inner core (2) and the coaxial setting of urceolus (1).