CN201024199Y

CN201024199Y - Solar pool device for extracting lithium from brine

Info

Publication number: CN201024199Y
Application number: CNU2006201728642U
Authority: CN
Inventors: 徐月和; 时炜
Original assignee: China ENFI Engineering Corp
Current assignee: China ENFI Engineering Corp
Priority date: 2006-12-30
Filing date: 2006-12-30
Publication date: 2008-02-20
Anticipated expiration: 2016-12-30

Abstract

The utility model provides a solar energy pond device used for an extraction of lithium from brine, comprising a pond body which has a main body structure layer and of which the key points lie in that the main body structure layer along the side wall and the bottom part of the pond body is provided with a waterproof and moistureproof layer, an insulation layer, an anti-corrosion, waterproof and endothermic layer in sequence from bottom to up. The solar energy pond device of the utility model consists of four or five structures and the top layer is the anti-corrosion, waterproof and endothermic layer which is made of anti-corrosion materials with excellent endothermic performance and adopts a special insulation structure, which leads to better insulation effect with temperature of 30 to 50 DEG C in the pond bottom in winter and spring while 50-80 DEG C in summer and fall after 20-40 days of solar energy storage, thus promoting crystallization and precipitation of lithium carbonate from carbonate-type brine, improving crystallization rate and production efficiency and realizing continuous operation.

Description

Be used for bittern and carry the solar pond device of lithium

Technical field

The utility model relates to technical field of non-ferrous metallurgy, relates more specifically to a kind of solar pond device that bittern is carried lithium that is used for.

Background technology

Industrial traditional lithium technology of carrying has chlorination process and sulfuric acid process, is raw material with the rock ore deposit all.Utilize solar pond as crystallizing pond crystallization from carbonate type bittern to separate out Quilonum Retard be that important, up-to-date bittern is put forward one of lithium technology.

In fact, solar pond has been widely used in fields such as aquaculture, heating, generating.And utilize the solar pond method that Quilonum Retard is separated out in crystallization from carbonate type bittern as crystallizing pond also to some extent simply to introduce in the document at home.Solar pond wherein is a kind of concentraing pond of collecting sun power and storing sun power and use as thermal source.The salinity gradient solar pond is utilized salt concn in the water to be steady state usually and is absorbed the radiant heat of sun power and the convection losses of isolated heat in bottom water.With solar pond as crystallizing pond crystallization from carbonate type bittern separate out Quilonum Retard, the working medium of solar pond is promptly produced the raw brine of Quilonum Retard; Utilize the solubleness of Quilonum Retard in water to reduce along with the rising of temperature that (0.859g/l during during by 30 ℃ 1.259g/l to 80 ℃ has reduced by 32%.) characteristic, the heat-accumulating process of solar pond and the precipitation process of Quilonum Retard are combined together, can get the Quilonum Retard grade at the mixed salt more than 80%, it is with low cost, and is simple in structure, makes full use of sun power, the economic benefit height.

In the prior art, the solar pond of separating out the Quilonum Retard crystallizing pond as crystallization from carbonate type bittern has two kinds of implementations:

A kind of is warm canopy formula crystallizing pond, promptly on the pond body of bittern crystallizing pond (solar pond), set up plastic greenhouse, can make the bittern intensification and not have evaporation substantially, and prevent sleet bittern desalting in season and when blowing silt particle enter crystallizing pond, kept the cleaning of the mixed salt that produces, Quilonum Retard content reaches about 30% in the obtained mixed salt.But the deficiency of this temperature canopy formula crystallizing pond is: be subjected to the restriction of plastic greenhouse to cause volume little, it is few to handle the bittern amount, and receiving salt wastes time and energy; Being subjected to influences greatly sunshine, and heat storage capacity is poor, and the temperature difference is bigger sooner or later in the canopy, cause halite, scale etc. at low temperatures crystallization separate out, influenced the grade of lithium salts; In addition, because many at highlands strong wind heavy snow weather, ultraviolet ray is very strong, very easily damages and moulds canopy, makes production cost raise.

Another kind of prior art also be with solar pond as crystallizing pond crystallization from carbonate type bittern separate out Quilonum Retard, the working medium of solar pond is promptly produced the raw brine of Quilonum Retard; The pond body sidewall of described solar pond is direct with list (two) layer structure that clay surrounds or concrete masonry units forms, and only is covered with the high protection against corrosion water-proof material that absorbs heat of high-weatherability at pond body inwall, though be employing water-proof material structure at the bottom of the pond, its structure is seen Fig. 1.Wherein, 11. clays, 12. geomembranes, 13. plastic films.

The prior art makes full use of the advantage of the climate resources (sun power) of nature, with the crystallizing pond of solar pond as Quilonum Retard, makes to be easy to concentrated in a large number precipitation of dispersive Quilonum Retard and extraction in the bittern, and reduces cost to greatest extent, does not re-use mineral fuel.But above-mentioned existing solar pond lacks pool wall at the bottom of the pond and is on every side taked the insulation measure, can't satisfy processing requirement, in the pond particularly at the bottom of the pond temperature easily influenced by ambient temperature, influence the effect of solar pond, influence the temperature and the thermal isolation and heat storage effect of solar pond, the radiant heat of the sun is not fully utilized, is difficult to realize continuous production; In addition, the cushioning material Corrosion Protection that prior art adopted is poor, and the life-span is short, and is ageing-resistant grade for weather resistance is poor, can't stably manufactured.

The utility model content

Therefore, the purpose of this utility model is to have proposed a kind of novel solar pond device that is used for separating out from the carbonate type bittern crystallization Quilonum Retard at the shortcoming that is used for separating out from the carbonate type bittern crystallization solar pond device existence of Quilonum Retard at present.

Correspondingly, the utility model provides a kind of solar pond device that bittern is carried lithium that is used for, include the pond body, this pond body comprises the agent structure layer, and it focuses on: this agent structure layer upwards all is distributed with waterproof and dampproof layer, thermal insulation layer, anticorrosion waterproof heat-sink shell successively along the sidewall and the bottom of this pond body.

In addition, also be provided with the insulation construction protective layer between this thermal insulation layer and the anticorrosion waterproof heat-sink shell.

This anticorrosion waterproof layer is black, gray waterproof roll (the high person of heat absorption coefficient for well).

This thermal insulation layer is powdery, particulate state or plate-like lagging material.

This waterproof and dampproof layer is geomembrane or waterproof roll.

The cross section of this pond body is trapezoidal, and the angle of this trapezoidal base and side is controlled at 100～160 °.

This pond body is built-in with the mixed liquor that comprises bittern.

The plane of this pond body is a rectangle, and the ratio of this orthogonal and the corresponding to length of mixed liquor flow direction and this orthogonal width is between 1.5～5.

This mixed liquor is a three-decker.This three-decker comprises successively: surperficial troposphere, non-troposphere, middle part and troposphere, bottom (accumulation of energy district).This troposphere, surface is a fresh water aquifer, and non-troposphere, this middle part is the salinity gradient layer, and the troposphere, bottom is the salinity homogeneous layer.

The solar pond device that the utility model proposed is made up of four layers or five-layer structure, the superiors are anticorrosion waterproof heat-sink shell, it selects good anticorrosive of effective heat absorption capacity and special insulation construction for use, make solar pond thermal isolation and heat storage better effects if, after absorbing solar heat-preservation in 20～40 days, temperature can reach 30～50 ℃ at the bottom of the winter-spring season pond, temperature can reach 50～80 ℃ at the bottom of the summer and autumn ponds, thereby Quilonum Retard is separated out in acceleration crystallization from carbonate type bittern, improve percent crystallization in massecuite, enhance productivity, can realize operate continuously.

The utility model relate to a kind of as crystallizing pond crystallization from carbonate type bittern separate out the solar pond of Quilonum Retard, it has effectively improved the heat-insulating property of solar pond, solar heat is fully utilized, improved brine temperature rising speed in the solar pond, thereby the speed of Quilonum Retard is separated out in acceleration crystallization from carbonate type bittern, improve eduction rate, improved production efficiency, and can realize continuous production.In addition, the utility model solar pond adopts in the five layers/four-layer structure, and the first floor adopts the black/grey anticorrosive with high heat absorption coefficient, has and more improves Corrosion Protection, can adapt to atrocious weather, improves the solar pond life-span.

Consulting the accompanying drawing of accompanying description the utility model embodiment, is very easily with describing the utility model afterwards in detail.It is to restriction of the present utility model that accompanying drawing can not be understood as with relevant description, and characteristics of the present utility model are limited in claims.

Description of drawings

Described with reference to accompanying drawing according to embodiment described in the utility model, wherein:

Figure 1 shows that the cross-sectional view of existing solar pond device;

Figure 2 shows that embodiment described in the utility model is used for the cross-sectional view that bittern is carried the solar pond device of lithium.

Embodiment

The utility model embodiment provides a kind of solar pond device that bittern is carried lithium that is used for, and is illustrated in figure 2 as embodiment described in the utility model and is used for the cross-sectional view that bittern is carried the solar pond device of lithium.Among Fig. 2,20, the pond body; 21, anticorrosion waterproof heat-sink shell; 22, insulation construction protective layer; 23, thermal insulation layer; 24, waterproof and dampproof layer; 25, agent structure layer.

The pool wall of solar pond pond body 20 is formed by five layers at the bottom of the pond, the first layer (the superiors) is anticorrosion waterproof heat-sink shell 21, adopt high heat absorption coefficient material, as waterproof rolls such as black, gray Ethylene Propylene Terpolymer or EVA, about 1～the 2mm of thickness, this material have heat absorption, impervious and corrosion resistance characteristic, make the solar pond can be non-leakage, effectively protection against corrosion, and a large amount of various optical radiation of absorption (comprise but do not limit sunlight is only arranged) from surrounding environment; The second layer is an insulation construction protective layer 22, adopt plain concrete or steel concrete material, smooth no burr is wanted on the surface, can make anticorrosion waterproof heat-sink shell 21 and thermal insulation layer 23 close attachment on this insulation construction protective layer 22, if anticorrosion waterproof heat-sink shell 21 and/or thermal insulation layer 23 are selected more smooth lagging material of inflexible or moulding waterproof roll preferably for use certainly, then can save insulation construction protective layer 22, therefore, this layer is inessential; The 3rd layer is thermal insulation layer 23, adopts powdery, particulate state or plate-like lagging material; The 4th layer is waterproof and dampproof layer 24, adopts geomembrane or waterproof roll; Layer 5 is an agent structure layer 25, and the rigid material that its usable surface is smooth more than the about 10cm of thickness, perhaps adopts sand or concrete structure, and flat building up rammed in also available rubble, clay compacting, and the hard thing of macrobead or spininess must not be arranged, with the protection water-proof material.

The solar pond one-piece construction that the utility model embodiment is described to be used for separating out from the carbonate type bittern crystallization Quilonum Retard is that rectangle is trapezoidal, the plane that is pond body 20 is a rectangle, the cross section of pond body 20 is trapezoidal (as shown in Figure 2), the angle θ that trapezoid base and side constitute between 100 °～160 °, best angle according to geographical environment of living in and solar radiation characteristic, climate characteristic, build pond material etc. and determine.The length on length limit determines to consider landform, sunlight incident direction, wind direction, factor such as operate continuously whether.Single solar pond should not be too little, need have certain capacity to dispel the heat to guarantee accumulation of heat round the clock, as be used for continuous production, and then feed liquid flow direction length and radical length will have certain proportion, select according to wind direction, sunlight incident, and this ratio preferably is between 1.5～5.

Be equipped with the mixed liquor (not shown) that comprises bittern in this pond body 20.This mixed liquor is a three-decker, and this three-decker comprises successively: surperficial troposphere, non-troposphere, middle part and troposphere, bottom.

More particularly, be divided into 3 zones in the solar pond from top to bottom: surperficial troposphere is made up of fresh water, and its temperature and envrionment temperature are close, mainly plays the effect that forms and protect the salinity gradient layer under it; Troposphere, bottom (energy storage district) is made up of saturated salts solution, main heat absorption and the heat accumulation function of rising.During non-uniform temperature, can reach uniform state, thereby its effect is thermal-arrest and accumulation of heat by convection current and thermal conduction; Non-troposphere, middle part, its salt concn increases with the degree of depth, makes this layer pseudo adiabatic device, stop heat passage, heat is scattered and disappeared in the pond face, thereby can make the temperature variation in bottom energy storage floor district more much higher, thereby reach the effect of collecting and storing sun power than the temperature of last convective region.

Existing solar pond device is because the pond body structure is simple, and its heat absorption and heat accumulation effect are relatively poor.The solar pond of above-mentioned novel texture, be used for when Quilonum Retard is separated out in the carbonate type bittern crystallization, make the solar pond better heat preservation, after absorbing solar heat-preservation in 20～40 days, winter-spring season recuperation layer temperature can reach 30～50 ℃, summer and autumn the recuperation layer temperature can reach 50～80 ℃, thereby Quilonum Retard speed is separated out in quickening crystallization from carbonate type bittern, increase the amount of separating out, realize continuous production, enhance productivity.Simultaneously, novel solar pond adopts five-layer structure, adopts black/grey heat absorption/heat-and corrosion-resistant water-proof material, has and more improves Corrosion Protection, can adapt to atrocious weather again, increases heat absorption efficiency, improves the solar pond life-span.

The solar pond that the present invention is used can be determined pool wall angle θ according to local solar radiation characteristic, climate characteristic, at first selects suitable clay landform or other landform, and ground water table is preferably lower than at the bottom of the pond more than 1～2m, excavates out the Baltimore groove that angle is θ; Baltimore groove is carried out smooth, lay one deck protection against the tide layer 24 that discharges water, discharge water in protection against the tide again and lay one deck thermal insulation layer 23 above the layer, then,, lay anticorrosion waterproof heat-sink shell 21 at last in the above with plain concrete laying insulation construction protective layer 22.

The utility model described herein is easy to change on specifically described content basis, revises and/or replenishes, and is understandable that all these change, revise and/or additional all being included in the spirit and scope of foregoing description of the present utility model.

Claims

1. one kind is used for the solar pond device that bittern is carried lithium, includes the pond body, and this pond body comprises the agent structure layer, it is characterized in that:

This agent structure layer upwards all is distributed with waterproof and dampproof layer, thermal insulation layer, anticorrosion waterproof heat-sink shell successively along the sidewall and the bottom of this pond body.

2. as claimed in claim 1ly be used for the solar pond device that bittern is carried lithium, wherein, also be provided with the insulation construction protective layer between this thermal insulation layer and the anticorrosion waterproof heat-sink shell.

3. as claimed in claim 1 or 2ly be used for the solar pond device that bittern is carried lithium, wherein, this anticorrosion waterproof heat-sink shell is Ethylene Propylene Terpolymer or EVA waterproof roll.

4. as claimed in claim 1 or 2ly be used for the solar pond device that bittern is carried lithium, wherein, this thermal insulation layer is powdery, particulate state or plate-like lagging material.

5. as claimed in claim 1 or 2ly be used for the solar pond device that bittern is carried lithium, wherein, this waterproof and dampproof layer is geomembrane or waterproof roll.

6. as claimed in claim 1 or 2ly be used for the solar pond device that bittern is carried lithium, wherein, the cross section of this pond body is trapezoidal, and the angle of this trapezoidal base and side is 100 °～160 °.

7. as claimed in claim 1 or 2ly be used for the solar pond device that bittern is carried lithium, wherein, be equipped with the mixed liquor that comprises bittern in this pond body.

8. as claimed in claim 7ly be used for the solar pond device that bittern is carried lithium, wherein, the plane of this pond body is a rectangle, and the ratio of this orthogonal and the corresponding to length of mixed liquor flow direction and this orthogonal width is between 1.5 to 5.

9. as claimed in claim 7ly be used for the solar pond device that bittern is carried lithium, wherein, this mixed liquor is a three-decker, and this three-decker comprises successively: surperficial troposphere, non-troposphere, middle part and troposphere, bottom.

10. as claimed in claim 9ly be used for the solar pond device that bittern is carried lithium, wherein, this troposphere, surface is a fresh water aquifer, and non-troposphere, this middle part is the salinity gradient layer, and the troposphere, bottom is the salinity homogeneous layer.