CN104804712A - Metal-chloride melt material with high heat conductivity as well as preparation method and application of metal-chloride melt material - Google Patents
Metal-chloride melt material with high heat conductivity as well as preparation method and application of metal-chloride melt material Download PDFInfo
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- 229910001510 metal chloride Inorganic materials 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000000289 melt material Substances 0.000 title abstract 7
- 150000003839 salts Chemical class 0.000 claims abstract description 61
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 16
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000001110 calcium chloride Substances 0.000 claims abstract description 16
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 16
- 239000007787 solid Substances 0.000 claims abstract description 10
- 238000009413 insulation Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 239000011261 inert gas Substances 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 44
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 238000011084 recovery Methods 0.000 claims description 7
- 239000002918 waste heat Substances 0.000 claims description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical group [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 abstract description 6
- 229940072033 potash Drugs 0.000 abstract description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 abstract description 6
- 235000015320 potassium carbonate Nutrition 0.000 abstract description 6
- 238000011161 development Methods 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 5
- 239000003337 fertilizer Substances 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000001035 drying Methods 0.000 abstract 1
- 238000004134 energy conservation Methods 0.000 abstract 1
- 238000002844 melting Methods 0.000 description 24
- 230000008018 melting Effects 0.000 description 24
- 238000012546 transfer Methods 0.000 description 10
- 239000002893 slag Substances 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 6
- 229910017604 nitric acid Inorganic materials 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 230000003068 static effect Effects 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005338 heat storage Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 241001131796 Botaurus stellaris Species 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- 229910000805 Pig iron Inorganic materials 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 229940091250 magnesium supplement Drugs 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 description 1
- JQPQZHIUHRBBHU-UHFFFAOYSA-N [Na].[Mg].[Ca] Chemical compound [Na].[Mg].[Ca] JQPQZHIUHRBBHU-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QHFQAJHNDKBRBO-UHFFFAOYSA-L calcium chloride hexahydrate Chemical compound O.O.O.O.O.O.[Cl-].[Cl-].[Ca+2] QHFQAJHNDKBRBO-UHFFFAOYSA-L 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229960002337 magnesium chloride Drugs 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 229940050906 magnesium chloride hexahydrate Drugs 0.000 description 1
- DHRRIBDTHFBPNG-UHFFFAOYSA-L magnesium dichloride hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[Cl-].[Cl-] DHRRIBDTHFBPNG-UHFFFAOYSA-L 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- PDEDQSAFHNADLV-UHFFFAOYSA-M potassium;disodium;dinitrate;nitrite Chemical compound [Na+].[Na+].[K+].[O-]N=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O PDEDQSAFHNADLV-UHFFFAOYSA-M 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- -1 salt form compound Chemical class 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 229910021654 trace metal Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/08—Materials not undergoing a change of physical state when used
- C09K5/10—Liquid materials
- C09K5/12—Molten materials, i.e. materials solid at room temperature, e.g. metals or salts
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a metal-chloride melt material with high heat conductivity as well as a preparation method and an application of the metal-chloride melt material. The metal-chloride melt material with high heat conductivity comprises components as follows: 0.05%-2% of metallic magnesium powder and 98%-99.95% of calcium chloride. The metallic magnesium powder and calcium chloride are mixed and stirred uniformly, heated in the inert gas protecting atmosphere until solids are completely smelted to liquids and then subjected to thermal insulation, cooling, smashing and drying, and the metal-chloride melt material with high heat conductivity is obtained. Raw materials of the metal-chloride melt material with high heat conductivity are from waste salt of tailings produced in the potash fertilizer production process of a salt lake, high-value utilization of the salt lake tailing waste salt is realized, and comprehensive development and environmental protection of the salt lake resources are realized; the system has a high heat conductivity coefficient and good heat conductivity and is applicable to the field of large-scale utilization and industrial energy conservation of renewable energy sources.
Description
Technical field
The invention belongs to industrial energy saving and renewable energy source mass-producing utilizes field, the metal-chloride fused salt material of particularly a kind of high heat conduction and preparation method and application.
Background technology
Industry is that the maximum terminal of China can consumer sector, accounts for about 70% of national total energy consumption.Wherein extensive material industry accounts for 43% of national gross industrial output value, but energy consumption accounts for 72% of industrial total energy consumption, accounts for 52% of national energy total amount.The average recovery utilization rate of waste heat, far below international most advanced level, is the major cause causing industrial energy utilising efficiency low.For hot industry waste heat recovery, according to incompletely statistics, China 1000m of having gone into operation and having built
3large blast furnace more than level about has 169, estimates that comprehensive pig iron production capacity is at about 3.2 hundred million tons, and therefore annual Chinese large-sized blast furnace produces the quantity of slag close to 100,000,000 tons, and the tapping temperature of high temperature furnace slag, between 700 ~ 1600 DEG C, is carried heat and amounted to mark 6,000,000 tons, coal.And actual pig iron output and slag iron ratio are all higher than theoretical value, the heat therefore entrained by high temperature furnace slag is more huge.A kind of method realizing high temperature furnace slag heat energy recycle utilizes medium to contact with high temperature furnace slag or heat exchange is carried out in radiation, then high-temperature medium carried huge energy and be converted into other forms of energy and be used.Therefore development is a kind of in high temperature (≤800 DEG C) under good heat-transfer, stable in properties heat transferring medium just become critical problem.Realize the recycling of high temperature furnace slag heat energy, not only meet the present stage energy-saving and emission-reduction policy advocated of country and the strategy of sustainable development, and enterprise's production cost can be saved, reduce energy consumption, realize the maximization of self benefit.
On the other hand, solar energy high temperature thermal utilization comprises solar energy thermal-power-generating and the accumulation of energy of solar heat chemical reaction.There is due to sun power the shortcomings such as the low and poor stability of intermittence, energy density, be difficult to the demand meeting continuous energy, and very high temperature can be produced after solar light focusing.Therefore the reliable high temperature heat transfer heat-storing material of selectivity will be one of gordian technique improving solar energy thermal-power-generating and solar heat chemical reaction energy storage efficiency.
Melting salt is as a kind of mineral compound, and viscosity is little, good heat conductivity, corrodibility are weak, steam forces down, use temperature scope wide, low price, becomes the first-selection of middle high temperature heat transfer heat-storing material.Research shows, compared with high temperature heat conductive oil, uses melting salt (nitric acid fused salt) that solar power station maximum operating temperature can be made to bring up to about 500 DEG C, makes steam turbine generating efficiency bring up to 40%.In addition, use melting salt that heat accumulation efficiency can also be made to improve 2.5 times, enhance heat storage capacity, reduce accumulation of heat cost.
Heat transfer heat-storing material at present for solar energy thermal-power-generating field comparative maturity is two end number mixing nitric acid fused salt (60%KNO
3-40wt%NaNO
3, Solar Salt) and ternary mixed nitrate fused salt (53%KNO
3-7%NaNO
3-40wt%NaNO
2, Hitec).Chinese patent 00111406.9,200710027954.1,201110287684.4 and 201110425668.7 and US Patent No. 007588694B1 also individually disclose five kinds of nitric acid molten salt systems.The upper limit use temperature of these two kinds of nitric acid fused salts is generally no more than 600 DEG C, run under the trough type solar power generation that temperature is lower and be fine, and there will be the problem of decomposing and losing efficacy in the overcritical heat generating of the tower type solar that operating temperature is higher and such as the pyrolysis hydrogen manufacturing etc. of light collection solar chemical utilization.And the thermal conductivity of nitric acid fused salt (particularly polynary nitric acid fused salt) is very low, general between 0.5 ~ 0.55W/ (mK), for the power station run under these high temperature, require that heat-transfer medium has larger heat conductivility, rapidly the high temperature heat that optically focused obtains can be transferred out, prevent local superheating situation from occurring.
Application number is 201310733403.2, 201310731924.4 with the patent application of 201310731910.2 each provides water glass, quartz sand and metal oxide (or nonmetal oxide) nanoparticle and carbonic acid fused salt form compound system, the carbonic acid fused salt of these three kinds of systems can use under 800 DEG C of high temperature, the requirement of solar energy high temperature heat generating can be met well, but still there is the not high problem of thermal conductivity (thermal conductivity particularly under high temperature) in carbonate system, heat-transfer medium can not be met store fast/the needs of heat release, and the fusing point of these additives is high, exist in solid particulate form in liquid fused salt, due to density variation, stable existence is difficult under long-time running environment, there is the problems such as layering, and make the existence of solid particulate that whole system viscosity is increased, be not suitable as the high temperature heat transfer heat-storing material under operational conditions steady in a long-term.
Particularly for China, China has abundance can for the salt lake resources utilized.Qinghai is the main area of China's salt lake distribution, and only just there are 32 salt lakes in the Caidamu Basin, and contain the salts resources such as abundant potassium, magnesium, lithium, calcium, potential age deduction is huge.Discard bittern magnesium resource with Qinghai Salt Lake and be utilized as example, magnesium chloride reserves are 40.6 hundred million tons, and sodium-chlor reserves are 555.4 hundred million tons, and that urgently to be resolved hurrily is mine tailing stacking-bischofite MgCl
26H
2o (year discharge about 2,000 ten thousand m
3) and NaCl, the abraum salt about 2,000 ten thousand tons that high sodium salt ore deposit and production Repone K produce.If utilize salt lake to prepare magnesium sodium calcium base molten chloride and be applied to industrial energy saving as heat storage and transition material and renewable energy source mass-producing utilizes field producing the tailing waste salt produced in potash fertilizer process; not only Making Use of Tailings can be made; solve discarded bittern to pollute, and its mass-producing high-value-use can also be realized.Significantly, the hold over system efficiency of solar energy high temperature thermal utilization and industrial afterheat recovery can be improved, significantly reduce the accumulation of heat cost of high enterprise, all have significant to salt lake resources high-value-use and the Sustainable development of potash fertilizer industry.Application number be 200510110315.2 patent application develop a kind of calcium chloride hexahydrate that uses as heat-storage medium, magnesium chloride hexahydrate is applied in the heat collecting system of low-temperature heat accumulating aspect as nucleator, but molten chloride is also fewer at present as the applied research of high temperature heat transfer heat-storing material.
Summary of the invention
In order to overcome shortcoming that existing fusion tray of thermal transmission and storage material exists under long term high temperature environmental operating conditions with not enough; the present invention produces mine tailing high level resource utilization to realize Salt Lake Potash, promotes that it utilizes at industrial energy saving and renewable energy source mass-producing and is applied as target in equal energy source technology.Primary and foremost purpose of the present invention is the metal-chloride fused salt material providing a kind of high heat conduction.
Another object of the present invention is to the preparation method of the metal-chloride fused salt material that described high heat conduction is provided.
Another object of the present invention is the application of the metal-chloride fused salt material providing described high heat conduction.
Object of the present invention is achieved through the following technical solutions: a kind of metal-chloride fused salt material of high heat conduction, is grouped into by following one-tenth by mass percentage: metal magnesium powder 0.05 ~ 2%, calcium chloride 98 ~ 99.95%.
In order to higher thermal conductivity and larger heat-transfer capability can be had, guarantee that high temperature heat can absorb and transmission by fused salt fast, improve the storage efficiency of heat energy, the local superheating of avoiding device, the metal-chloride fused salt material of above-mentioned high heat conduction, is preferably grouped into by following one-tenth by mass percentage: metal magnesium powder 0.1 ~ 0.5%, calcium chloride 99.5 ~ 99.9%.
The preparation method of the metal-chloride fused salt material of above-mentioned high heat conduction, comprise the following steps: metal magnesium powder is mixed with calcium chloride, stir, in protection of inert gas atmosphere, be heated to all solids become liquid, insulation, then cool, pulverize, dry, obtain the metal-chloride fused salt material of high heat conduction;
Wherein, metal magnesium powder and calcium chloride is (0.05 ~ 2) in mass ratio: (98 ~ 99.95) proportioning, preferably by (0.1 ~ 0.5): (99.5 ~ 99.9) proportioning.
Described rare gas element is preferably argon gas.
The temperature of described heating is preferably 800 ~ 900 DEG C.
The time of described insulation is preferably 6 ~ 8 hours.
The temperature of described cooling is preferably 20 ~ 40 DEG C, is more preferably 25 DEG C.
The metal-chloride fused salt material of above-mentioned high heat conduction can be applicable to hot industry waste heat recovery field and high-temperature solar power field, is particularly applied in high temperature furnace slag energy recovery field and the overcritical hot power field of tower type solar of steel industry.
The present invention has following advantage and effect relative to prior art:
(1) the metal-chloride melting salt material provided by the invention fusing point of molten chloride and upper limit use temperature in feed change hardly, and thermal conductivity is high, good thermal conduction, can be applied to high-temperature residual heat and reclaim and the overcritical hot power field of tower type solar.
(2) metal-chloride melting salt material provided by the invention not only overcomes traditional heat transfer media and reclaims and the defect in solar energy thermal-power-generating field as air, water, heat conduction wet goods effectively can not to be applied to high-temperature residual heat because vapour pressure under upper limit use temperature low and high temperature is large, and compared with all-chloride fused salt, adding the heat conductivility of significantly enhancing system under trace metal condition.
(3) metal-chloride melting salt material provided by the invention, the range of application of melting salt is made to be extended to renewable energy source and hot industry waste heat recovery field, and the tailing waste salt of raw material sources in Salt Lake Potash production process, achieves the comprehensive development and utilization of salt lake resources.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment 1
A kind of metal-chloride melting salt material, preparation method is as follows:
By the calcium chloride of the magnesium powder of 0.05wt%, 99.95wt%, (the tailing waste salt in Salt Lake Potash production process refines and obtains, concrete steps are pressed " Zhang Shuxia etc. utilize the old halogen in Huo Buxun salt pan to extract the feasibility analysis [J] of chloride dehydrate calcium. Yunnan chemical; 2008; 35 (4): 17-20 " operation, following example material used is with embodiment 1) mix and stir, static state is heated to 850 DEG C to the whole melting of solid, then 8 hours are incubated, naturally cool to room temperature again, mechanical disintegration, obtains metal-chloride melting salt material.
Adopt differential scanning calorimeter to carry out fusing point test to the metal-chloride melting salt material that the present embodiment prepares, test result is as shown in table 1.Adopt Hotdisk TPS2500 thermal constant analyser to carry out Determination of conductive coefficients to the metal-chloride melting salt material that the present embodiment prepares at normal temperatures, result is as shown in table 2.
Embodiment 2
A kind of metal-chloride melting salt material, preparation method is as follows:
The magnesium powder of 0.1wt%, the calcium chloride of 99.9wt% are mixed and stirred, and static state is heated to 850 DEG C to the whole melting of solid, is then incubated 8 hours, then naturally cools to room temperature, mechanical disintegration, obtain metal-chloride melting salt material.
Testing method is with embodiment 1, and result is as shown in table 1 ~ 2.
Embodiment 3
A kind of metal-chloride melting salt material, preparation method is as follows:
The magnesium powder of 0.3wt%, the calcium chloride of 99.7wt% are mixed and stirred, and static state is heated to 850 DEG C to the whole melting of solid, is then incubated 8 hours, then naturally cools to room temperature, mechanical disintegration, obtain metal-chloride melting salt material.
Testing method is with embodiment 1, and result is as shown in table 1 ~ 2.
Embodiment 4
A kind of metal-chloride melting salt material, preparation method is as follows:
The magnesium powder of 0.5wt%, the calcium chloride of 99.5wt% are mixed and stirred, and static state is heated to 850 DEG C to the whole melting of solid, is then incubated 8 hours, then naturally cools to room temperature, mechanical disintegration, obtain metal-chloride melting salt material.
Testing method is with embodiment 1, and result is as shown in table 1 ~ 2.
Comparative example 1
Use the testing method of embodiment 1 directly to test analytical pure calcium chloride (Chemical Reagent Co., Ltd., Sinopharm Group), result is as shown in table 1 ~ 2.
Comparative example 2
The aluminium powder of 0.3wt%, the calcium chloride of 99.7wt% are mixed and stirred, and static state is heated to 850 DEG C to the whole melting of solid, is then incubated 8 hours, then naturally cools to room temperature, mechanical disintegration, obtain metal-chloride melting salt material.
Testing method is with embodiment 1, and result is as shown in table 1 ~ 2.
Table 1
| Sample number into spectrum | Metal content (wt%) in system | Fusing point (DEG C) |
| Embodiment 1 | 0.05 | 773.33 |
| Embodiment 2 | 0.1 | 774.6 |
| Embodiment 3 | 0.3 | 775.28 |
| Embodiment 4 | 0.5 | 772.16 |
| Comparative example 1 | 0 | 776.69 |
| Comparative example 2 | 0.3 | 774.32 |
Table 2
From the result of table 1 and table 2, in calcium chloride, add a small amount of MAGNESIUM METAL as seen, change system fusing point and upper limit use temperature hardly, and the thermal conductivity of the muriate melting salt material obtained is high, good thermal conduction.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from spirit of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (9)
1. a metal-chloride fused salt material for high heat conduction, is characterized in that being grouped into by following one-tenth by mass percentage: metal magnesium powder 0.05 ~ 2%, calcium chloride 98 ~ 99.95%.
2. the metal-chloride fused salt material of high heat conduction according to claim 1, is characterized in that being grouped into by following one-tenth by mass percentage: metal magnesium powder 0.1 ~ 0.5%, calcium chloride 99.5 ~ 99.9%.
3. the preparation method of the metal-chloride fused salt material of the high heat conduction described in claim 1 or 2; it is characterized in that comprising the following steps: metal magnesium powder is mixed with calcium chloride; stir; in protection of inert gas atmosphere, be heated to all solids become liquid; insulation; then cool, pulverize, dry, obtain the metal-chloride fused salt material of high heat conduction.
4. the preparation method of the metal-chloride fused salt material of high heat conduction according to claim 3, is characterized in that: described rare gas element is argon gas.
5. the preparation method of the metal-chloride fused salt material of high heat conduction according to claim 3, is characterized in that: the temperature of described heating is 800 ~ 900 DEG C.
6. the preparation method of the metal-chloride fused salt material of high heat conduction according to claim 3, is characterized in that: the time of described insulation is 6 ~ 8 hours.
7. the preparation method of the metal-chloride fused salt material of high heat conduction according to claim 3, is characterized in that: the temperature of described cooling is 20 ~ 40 DEG C.
8. the preparation method of the metal-chloride fused salt material of high heat conduction according to claim 7, is characterized in that: the temperature of described cooling is 25 DEG C.
9. the application of the metal-chloride fused salt material of the high heat conduction described in claim 1 or 2, is characterized in that: the metal-chloride fused salt materials application of described high heat conduction is in hot industry waste heat recovery field and high-temperature solar power field.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510134557.9A CN104804712B (en) | 2015-03-25 | 2015-03-25 | The metal chloride fused salt material and preparation method of a kind of high heat conduction and application |
Applications Claiming Priority (1)
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| CN107177348A (en) * | 2017-05-22 | 2017-09-19 | 华南理工大学 | A kind of metal carbonate fused salt material of high heat conduction and preparation method and application |
| CN109735307A (en) * | 2019-02-22 | 2019-05-10 | 广州特种承压设备检测研究院 | A kind of modified chlorinated object fused salt and its preparation method and application |
| CN109777365A (en) * | 2019-01-29 | 2019-05-21 | 云南科威液态金属谷研发有限公司 | A kind of liquid metal composite phase-change energy storage material and its preparation method and application |
| CN109796940A (en) * | 2019-02-22 | 2019-05-24 | 广州特种承压设备检测研究院 | A kind of mixed chloride fused salt of high thermal conductivity and its preparation method and application |
| CN111909664A (en) * | 2020-07-14 | 2020-11-10 | 中盐金坛盐化有限责任公司 | Inorganic fiber composite chlorine system molten salt heat storage material and preparation method and application thereof |
| CN114316921A (en) * | 2022-01-05 | 2022-04-12 | 中国科学院工程热物理研究所 | Calcium-based energy storage material, preparation method and application thereof |
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| CN109777365A (en) * | 2019-01-29 | 2019-05-21 | 云南科威液态金属谷研发有限公司 | A kind of liquid metal composite phase-change energy storage material and its preparation method and application |
| CN109735307A (en) * | 2019-02-22 | 2019-05-10 | 广州特种承压设备检测研究院 | A kind of modified chlorinated object fused salt and its preparation method and application |
| CN109796940A (en) * | 2019-02-22 | 2019-05-24 | 广州特种承压设备检测研究院 | A kind of mixed chloride fused salt of high thermal conductivity and its preparation method and application |
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