CN107522220A - A kind of polyhalite leachant and its application - Google Patents
A kind of polyhalite leachant and its application Download PDFInfo
- Publication number
- CN107522220A CN107522220A CN201710791694.9A CN201710791694A CN107522220A CN 107522220 A CN107522220 A CN 107522220A CN 201710791694 A CN201710791694 A CN 201710791694A CN 107522220 A CN107522220 A CN 107522220A
- Authority
- CN
- China
- Prior art keywords
- polyhalite
- oil field
- leachant
- water
- field water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/22—Methods of underground mining; Layouts therefor for ores, e.g. mining placers
Abstract
The present invention relates to technical field of salt chemical industry, more particularly to a kind of polyhalite leachant and its application, wherein, the polyhalite leachant includes oil field water.Using leachant of the oil field water as Solution Mining of Polyhalite, molten leaching effectively can be carried out to polyhalite.Further, using oil field water as leachant, on the one hand the freshwater resources needed for the molten leaching of polyhalite deposit distributed area famine are solved the problems, such as, oil field water is on the other hand realized and the dual exploitation of polyhalite utilizes, solve the puzzlement of draining in oilfield process.
Description
Technical field
The present invention relates to technical field of salt chemical industry, more particularly to a kind of polyhalite leachant and its application.
Background technology
Polyhalite (K2SO4·MgSO4·2CaSO4·2H2O) it is a kind of be widely distributed in sulfate type sylvite deposit
Slightly solubility sylvite ore, its potassium content is (with K2SO4Meter) it is up to 28%.Polyhalite resource very abundant in the world, such as in China
Big salt flat, billow beach, the Cha Er Han Salt Lake in the western Caidamu Basin；The Sichuan Basin and Hubei In Jianghan Basin etc..For potassium deficiency
China, polyhalite deposit starts to turn into a kind of valuable Potash Resources, and causes extensive great attention.Wherein, buried depth
Excessive (3~6 km) causes the exploitation of the polyhalite of the Sichuan Basin and In Jianghan Basin to turn into problem, and exploitation degree of realization is low.Qaidam
Basin crude salt beach area polyhalite buried depth is shallower (2~60 meters, majority is distributed in 20 meters with shallow), and exploitation difficulty is relatively low.
It is more for polyhalite recovery method research, selection and its experimental study to focus mostly in good leachant, leachant
From chemical reagent, static molten leaching after being injected to mineral deposit, separation of solid and liquid obtains ore pulp after a period of time, and potassium is produced in evaporation
Salt.As a kind of deep polyhalite original position solution leaching method, and Chinese Academy of Sciences green grass or young crops have been invented by Sichuan Bry moral mining industry Co., Ltd
A kind of polyhalite solution leaching method of sea salt lake research institute etc., but their common feature is all：Configure certain density chemical solution
Liquid chooses certain single saturated solution, injects in ore bed, extracts ore pulp after standing a period of time out, obtains sylvite bittern.
At present, for use molten leaching method exploitation polyhalite, substantial amounts of freshwater resources are needed to use when preparing leachant, it is right
Turn into restraining factors in the Caidamu Basin of this Extreme drought, so that area's polyhalite is not exploited effectively for a long time.
In addition, current leachant is prepared using chemical reagent, not only cost is higher while also produces certain pollution.
The content of the invention
In view of the deficiencies in the prior art, the invention provides a kind of polyhalite leachant and its application, the leachant can
Effectively to carry out molten leaching to polyhalite, and solve the freshwater resources needed for the molten leaching of polyhalite deposit distributed area famine
The problem of.
To achieve the above object, present invention employs following technical scheme：
The invention provides a kind of polyhalite leachant, wherein, the polyhalite leachant includes oil field water.
Wherein, being comprised at least in the oil field water has following cation and anion：K+、Na+、Ca2+、Mg2+、SO4 2-、Cl-
And HCO3 -。
Preferably, Ca in the oil field water2+Content and Mg2+Content ratio be more than 1.
Preferably, also it is added with the oil field water and is used to lift Ca2+Content and Mg2+Content ratio chemistry
Reagent.
Preferably, part by weight of the chemical reagent in the oil field water is not more than 5%.
Present invention also offers application of the polyhalite leachant as described above in polyhalite production practice.
Beneficial effect：
The present invention uses leachant of the oil field water as Solution Mining of Polyhalite, effectively polyhalite can be carried out molten
Leaching.Further, on the one hand solved needed for the molten leaching of polyhalite deposit distributed area famine as leachant using oil field water
Freshwater resources the problem of, on the other hand realize oil field water and the dual exploitation of polyhalite utilize, solve the tired of oil field draining
Disturb.
Brief description of the drawings
Fig. 1 is the K in leaching solution when carrying out molten leaching to polyhalite in the embodiment of the present invention+The curve map of content.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the accompanying drawings to the specific reality of the present invention
The mode of applying is described in detail.The example of these preferred embodiments is illustrated in the accompanying drawings.Shown in accompanying drawing and according to
What the embodiments of the present invention of accompanying drawing description were merely exemplary, and the present invention is not limited to these embodiments.
Here, it should also be noted that, in order to avoid having obscured the present invention because of unnecessary details, in the accompanying drawings only
Show and according to the solution of the present invention closely related structure and/or processing step, and eliminate little with relation of the present invention
Other details.
For using molten leaching method exploitation polyhalite, needing to use substantial amounts of freshwater resources when preparing leachant, seriously lacking
Water directly constrains the production by dissolving and leaching process of arid area polyhalite.Specifically, for the polyhalite deposit in the Caidamu Basin, originally should
The polyhalite buried depth in region is shallower (2~60 meters, majority is distributed in 20 meters with shallow), and exploitation difficulty is relatively low, but due to lacking
Lack of water resource, so that area's polyhalite is not exploited effectively for a long time.
In the Caidamu Basin and its neighboring area, many places oil field is dispersed with, during oil exploitation inevitably
Produce oil field water.Oil field water is the direct underground water connected with oily (gas) layer, and it forms unified fluid system, oil with oily (gas)
Water in field is present in as oil gas in the hole, hole, seam of reservoir.In an oil-gas reservoir, generally all include oil, gas and water,
By gravitational differentiation, gas is upper, and oil is placed in the middle, and water is under.Oil field water source has：1. residual water, or connate water：During deposits
It is filled in intergranular pore water, after the buried diagenesis of deposit, water is saved in the earth formation；2. water leaking-in：Atmospheric precipitation, earth's surface
The water that water is appeared along reservoir or tomography, crack are penetrated into reservoir；3. plutonic water：From earth mantle and crust depth high temperature,
High salinity, the underground water for being full of gas.The generation of oil, migration, aggregation are so that loss, is all in situation existing for underground water
Lower generation.
Unavoidably there is the releasing of oil field water during oil exploitation, if not being acted upon that environment will be caused great
Influence.Traditional processing method, which focuses on, removes oil therein, and ignores the other utilization value of oil field water.
Inventor hereins have found, can effectively molten leaching using the oil field water gathered from oil field as leachant
Polyhalite, obtain sylvite bittern.
Wherein, being comprised at least in the oil field water has following cation and anion：K+、Na+、Ca2+、Mg2+、SO4 2-、Cl-
And HCO3 -。
Further, inventors have found, Ca in the oil field water2+Content (mass concentration) and Mg2+Content (matter
Measure concentration) ratio when being more than 1, the leaching rate of potassium ion can be improved.Therefore, it can also be added with and be used in the oil field water
Lift Ca2+Content and Mg2+Content ratio chemical reagent, such as calcium chloride.Preferably, the chemical reagent exists
Part by weight in the oil field water is not more than 5%.
Here is specific embodiment.
The selection of polyhalite：The Qazz in the Caidamu Basin is chosen in the specific embodiment of the present invention according to the polyhalite in mining area
Stone, 0.5kg is sampled, 50 mesh (0.3mm) is ground to agate mortar, identification of Mineral is carried out with X ' PertPRO X-ray diffractometers,
As a result show：Contain polyhalite 89% in mineral.Polyhalite is dissolved with nitric acid, its potassium content is with tetraphenylboron sodium gravimetric detemination
11.48%, it is consistent with theoretical value.
The selection of oil field water：The oil field water in lenghu oil field is chosen in the specific embodiment of the present invention, field acquisition is cold
The oil field water 1L in lake oil field is standby.Wherein, the K in the water of oil field is determined using ICAP 6500DUO plasma spectrometers+、Na+、
Ca2+、Mg2+、SO4 2-, silver consuming amount method measure oil field water in Cl-, hydrochloric titration measure oil field water in HCO3 -, determine ion
Content results are shown in Table 1.
The cold air lake oil field water ion component (g/L) of table 1
| K+ | Na+ | Ca2+ | Mg2+ | SO4 2- | Cl- | HCO3 - | TDS |
| 0.045 | 8.77 | 1.83 | 1.03 | 0.03 | 19.23 | 0.089 | 31.26 |
Experimental example A2 and A4 are carried out using the polyhalite and oil field water of the above, while using the polyhalite and distilled water of the above
Carry out experimental example A1 and A3:
A1, using distilled water as leachant, under 25 DEG C of temperature conditionss, distill water-soluble leaching 2g polyhalites with 50ml.
A2, using oil field water as leachant, under 25 DEG C of temperature conditionss, with the water-soluble leaching 2g polyhalites in 50ml oil fields.
A3, using distilled water as leachant, under 50 DEG C of temperature conditionss, distill water-soluble leaching 2g polyhalites with 50ml.
A4, using oil field water as leachant, under 50 DEG C of temperature conditionss, with the water-soluble leaching 2g polyhalites in 50ml oil fields.
Every group of experiment samples 4 times, after leachant is poured into polyhalite powder, is gently stirred with glass bar 3 seconds for the 1st time, stands
15min, sample 1ml.Then experiment is carried out in electric heating constant temperature magnetic agitation water-bath, magnetic agitation rotating speed is arranged to 200 turns,
Carried out respectively in 3h, 7h, 15h the 2nd time, the 3rd time and the 4th samples, supernatant liquor sample is taken after 15min is stood after sampling
Product 1ml.The K in supernatant sample is determined using plasma spectrometer+Content, gained K is tested A2 and A4 experimental examples+Content is entered
Row correction is (with the K in leaching solution+Content and K in original oil water in field+Content phase subtractive), obtain experimental example molten leaching K+Contain
Data are measured, referring to table 2.
The K of the molten leaching of the table each sample phases of 2 experimental example A1~A4+Content (g/L)
Fig. 1 be experimental example A1~A4 in, when carrying out molten leaching, the K in leaching solution+The change curve of content.
Refering to table 2 and accompanying drawing 1：
Under 25 DEG C of temperature conditionss, pour into polyhalite powder sample after stirring three seconds and stand using distilled water as leachant
15 minutes, K in acquired solution+Content is 1.630g/L, and K leaching rates reach 35.5%；And under similarity condition, with oil field water
It is molten to soak K in solution for leachant+Content is 1.735g/L, and K leaching rates are up to 37.8%.It can be seen that what oil field water contacted with polyhalite
Moment, that is, show the molten leaching ability bigger than distilled water.
Under 25 DEG C of temperature conditionss, in 0~3h time, K+Leaching rate is most fast, can make K to distilled water during 3h+Leach
39.8%, oil field water can make K+Leach 45.4%.Then, leaching rate gradually slows down, and K is leached to 15h distilled water+Content is
1.927g/L, leaching rate 41.9%.And oil field water can make polyhalite leach K in 15h+Ion concentration leaches to 2.213g/L
Rate is 48.1%.As can be seen here, oil field water has the molten leaching ability of the polyhalite K better than distilled water.
Under 50 DEG C of temperature conditionss, higher K is always maintained in 0~7h times+Leaching rate, far above at 25 DEG C
K+Leaching rate.To 7h, K in the water-soluble immersion liquid of distilled water and oil field+Content is respectively 2.876 and 2.989g/L, and leaching rate is respectively
62.5% and 65.0%.Since 7h, leaching rate slows down, and K is leached to 15h+Content is respectively 2.922g/L and 3.061g/L,
Leaching rate is respectively 63.5% and 66.6%.In the different phase of whole molten dipped journey, oil field water shows more preferable molten leaching
Ability.
Temperature is also K under 50 DEG C of environment an important factor for determining polyhalite molten leaching efficiency+Dissolution rate is apparently higher than 25 DEG C
Under environment, there is good molten leaching advantage.And under 25 DEG C of normal temperature environments, the water-soluble leaching efficiency in oil field is much higher than distilled water.
In summary, use oil field water to be used as leachant in the present invention, can effectively molten leaching polyhalite, acquisition potassium
Bittern water, a kind of new direction is provided for the production practice of polyhalite.Using oil field water as leachant, on the one hand solve
The problem of freshwater resources needed for the molten leaching of polyhalite deposit distributed area famine, on the other hand realize oil field water and polyhalite
Dual exploitation utilizes, and solves the puzzlement of oil field draining.It is miscellaneous in particular for existing in same or like geographic area simultaneously
Halogen stone ore bed and the region in oil field, such as the Caidamu Basin in the specific embodiment of the invention and Qinghai Oil Field, as polyhalite
The oil field water of leachant can gather materials on the spot, and greatly reduce the cost of polyhalite exploitation.
Described above is only the embodiment of the application, it is noted that for the ordinary skill people of the art
For member, on the premise of the application principle is not departed from, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as the protection domain of the application.
Claims (6)
1. a kind of polyhalite leachant, it is characterised in that the polyhalite leachant includes oil field water.
2. polyhalite leachant according to claim 1, it is characterised in that being comprised at least in the oil field water has following sun
Ion and anion：K+、Na+、Ca2+、Mg2+、SO4 2-、Cl-And HCO3 -。
3. polyhalite leachant according to claim 2, it is characterised in that Ca in the oil field water2+Content and Mg2+'s
The ratio of content is more than 1.
4. polyhalite leachant according to claim 2, it is characterised in that be also added with the oil field water and be used to be lifted
Ca2+Content and Mg2+Content ratio chemical reagent.
5. polyhalite leachant according to claim 4, it is characterised in that the chemical reagent is in the oil field water
Part by weight is not more than 5%.
6. application of any described polyhalite leachants of claim 1-5 in polyhalite production practice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710791694.9A CN107522220A (en) | 2017-09-05 | 2017-09-05 | A kind of polyhalite leachant and its application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710791694.9A CN107522220A (en) | 2017-09-05 | 2017-09-05 | A kind of polyhalite leachant and its application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107522220A true CN107522220A (en) | 2017-12-29 |
Family
ID=60683630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710791694.9A Pending CN107522220A (en) | 2017-09-05 | 2017-09-05 | A kind of polyhalite leachant and its application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107522220A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1766138A (en) * | 2005-09-08 | 2006-05-03 | 成都理工大学 | Potassium leach-out exploitation method from mamanite ore |
| CA2855492A1 (en) * | 2011-11-14 | 2013-05-23 | Intercontinental Potash Corp. (Usa) | Methods of processing polyhalite ore, methods of producing potassium sulfate, and related systems |
| CN107082668A (en) * | 2017-04-17 | 2017-08-22 | 四川省冶金地质勘查局六0五大队 | A kind of method that nitrogen sulphur potassium is produced by polyhalite |
-
2017
- 2017-09-05 CN CN201710791694.9A patent/CN107522220A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1766138A (en) * | 2005-09-08 | 2006-05-03 | 成都理工大学 | Potassium leach-out exploitation method from mamanite ore |
| CA2855492A1 (en) * | 2011-11-14 | 2013-05-23 | Intercontinental Potash Corp. (Usa) | Methods of processing polyhalite ore, methods of producing potassium sulfate, and related systems |
| CN107082668A (en) * | 2017-04-17 | 2017-08-22 | 四川省冶金地质勘查局六0五大队 | A kind of method that nitrogen sulphur potassium is produced by polyhalite |
Non-Patent Citations (2)
| Title |
|---|
| 柳广弟: "《石油地质学 第四版》", 31 March 2009, 石油工业出版社 * |
| 王泽九等: "《第十次李四光地质科学奖获得者主要科学技术成就与贡献》", 31 October 2009, 北京地质出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Lihe et al. | Origin and recharge estimates of groundwater in the ordos plateau, People’s Republic of China | |
| Peiyue et al. | Hydrochemical characteristics and evolution laws of drinking groundwater in Pengyang County, Ningxia, Northwest China | |
| Lü et al. | Geochemical processes and origin of boron isotopes in geothermal water in the Yunnan-Tibet geothermal zone | |
| Lee et al. | Strontium isotope geochemistry and its geochemical implication from hot spring waters in South Korea | |
| Goff et al. | A Sr-isotopic comparison between thermal waters, rocks, and hydrothermal calcites, Long Valley caldera, California | |
| Gurav et al. | Major and trace element concentrations in the geothermal springs along the west coast of Maharashtra, India | |
| Yang et al. | Spatiotemporal characteristics of hydrochemistry in Asian arid inland basin–a case study of Shiyang River Basin | |
| Teeple | Geophysics-and geochemistry-based assessment of the geochemical characteristics and groundwater-flow system of the US part of the Mesilla Basin/Conejos-Médanos aquifer system in Doña Ana County, New Mexico, and El Paso County, Texas, 2010–12 | |
| Jing et al. | Identification of indicators of groundwater quality formation process using a zoning model | |
| CN107542445A (en) | A kind of polyhalite recovery method | |
| Kalacheva et al. | The geochemistry of steam hydrothermal occurrences in the Koshelev Volcanic Massif, southern Kamchatka | |
| QIN et al. | IMPACTS OF YONGDING RIVER ON THE XISHAN KARST AQUIFER AND YUQUAN SPRING IN BEIJING, CHINA | |
| Mu et al. | Hydrochemical and environmental isotope characteristics of groundwater in the Hongjiannao Lake Basin, Northwestern China | |
| Ben Brahim et al. | Properties of geothermal resources in Kebilli region, Southwestern Tunisia | |
| Wang et al. | Hydrochemical evolution and reaction simulation of travertine deposition of the Lianchangping hot springs in Yunnan, China | |
| Anuar et al. | A geochemical comparison between volcanic and non-volcanic hot springs from East Malaysia: Implications for their origin and geothermometry | |
| Li et al. | Salinity evolution of aquitard porewater associated with transgression and regression in the coastal plain of Eastern China | |
| Shoedarto et al. | Investigation of meteoric water and parent fluid mixing in a two-phase geothermal reservoir system using strontium isotope analysis: A case study from Southern Bandung, West Java, Indonesia | |
| CN107686890A (en) | A kind of polyhalite leachant and its application | |
| Zentner et al. | Deep penetration of pharmaceuticals and personal care products through the vadose zone of effluent-irrigated land | |
| CN107522220A (en) | A kind of polyhalite leachant and its application | |
| Pasvanoğlu et al. | Environmental problems at the Nevşehir (Kozakli) geothermal field, central Turkey | |
| Yuce | A geochemical study of the groundwater in the Misli basin and environmental implications | |
| Xing et al. | Study on chemical genesis of deep geothermal fluid in gaoyang geothermal field | |
| Jing et al. | Hydro-geochemical simulation for the evolution of groundwater quality in Yinchuan Plain, China |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171229 |