Picromerite collecting agent and application thereof

Abstract

The invention discloses a picromerite collecting agent and application thereof. The collecting agent is one or a mixture of more of alcohol ether sulfosuccinic acid monoester disodium salt, lauryl sulfonated succinic acid monoester disodium salt and lauryl alcohol polyoxyethylene ether sulfosuccinic acid monoester disodium salt. The flotation collecting agent is mainly used for flotation separation of picromerite and can be selectively adsorbed on the surface of picromerite mineral, floatability difference between the picromerite mineral and impurity minerals such as sodium chloride is increased, floatability of the picromerite mineral is enhanced, and flotation efficiency is improved.

Description

Technical Field

[0001] The invention relates to a philatelic collector and application thereof, belonging to the technical field of mineral processing and flotation collectors. Background Art

[0002] Soft potassium magnesium alum (molecular formula K2Mg(SO4)2·6H2O) is an important multi-nutrient fertilizer and raw material for potassium sulfate production. Its application value lies in providing comprehensive nutrients such as potassium, magnesium, and sulfur to crops. It is especially suitable for chlorine-sensitive economic crops such as fruit trees, sugarcane, tea, and tobacco. It can provide relatively balanced, long-term and stable nutrients for crop growth, improve crop yields and drought resistance, cold resistance, and insect resistance. The market demand is growing. At present, soft potassium magnesium alum is mainly produced by processing salt lake brine. The mainstream process is the "conversion-flotation method", that is, potassium mixed salt ore is obtained by solar evaporation of salt fields, and then soft potassium magnesium alum is purified by flotation separation. However, the flotation process of this mineral still has the following technical bottlenecks: (1) Insufficient flotation efficiency and recovery rate. Traditional collectors such as sodium dodecylsulfonate and dodecyl bromomorpholine have low selectivity for soft potassium magnesium alum, resulting in K in the flotation concentrate. + The recovery rate fluctuates greatly, about 80%~94%, and the mother liquor entrainment loss is as high as 15%; when low-grade potassium mixed salt is flotated, the concentrate K + The grade is only 12.81% to 12.92%, requiring further conversion and purification, which increases costs. (2) Collector performance defects. Existing collectors, such as fatty acids and amides, rely on specific flotation conditions (such as low-temperature conversion) and have poor adaptability. Some agents (such as sulfonated castor oil) are complex to prepare, and residues may affect the quality of the fertilizer. Summary of the Invention

[0003] In view of this, the present invention provides a soft potassium leonite collector and an application thereof. The collector of the present invention is used for improving the quality and reducing impurities of soft potassium leonite, thereby significantly improving the flotation separation efficiency.

[0004] In order to achieve the above technical objectives, the present invention provides the following technical solutions: The collector of the present invention is one or more of disodium salt of alcohol ether sulfosuccinate monoester, disodium lauryl sulfosuccinate monoester and disodium lauryl polyoxyethylene ether sulfosuccinate monoester.

[0005] Preferably, when the collector is a mixture of disodium alcohol ether sulfosuccinate, disodium lauryl sulfosuccinate, and disodium lauryl polyoxyethylene ether sulfosuccinate, the mass ratio between them is (1-3): (2-4): (3-7).

[0006] The present invention also provides the use of the leonite collector in the flotation separation of leonite, and the specific steps are as follows: (1) Mixing the potassium mixed salt ore conversion product and the slurry mother liquor to obtain flotation slurry; (2) Adding a collector to the flotation pulp obtained in step (1) to carry out flotation to obtain a soft potassium magnesium sulfate concentrate.

[0007] Preferably, the mass fraction of the conversion product with a particle size of less than 0.15 mm in the conversion product of the potassium mixed salt ore is ≥ 60%; The chemical composition of the potassium mixed salt ore conversion product is 10.14~12.96wt% K + 、8.51~11.89wt% Na + 、23.90~32.06wt% SO4 2- 、5.69~6.73wt% Mg 2+ 、14.50~20.58wt% Cl - .

[0008] Preferably, the chemical composition of the slurry mother solution is 2.22~4.47wt% K + 、2.96~3.74wt% Na + 、6.50~11.96wt% SO4 2- 、3.81~4.95 wt% Mg 2+ 、14.58~15.64 Cl - .

[0009] Preferably, the flotation pulp temperature is 25-30°C.

[0010] Preferably, the dosage of the langbeinite collector is 150-350 g / t of raw ore.

[0011] The soft potassium magnesium sulfate collector provided by the present invention includes one or more of alcohol ether sulfosuccinate monoester disodium salt, lauryl sulfosuccinate monoester disodium, and lauryl alcohol polyoxyethylene ether sulfosuccinate monoester disodium. The collector of the present invention contains sulfonic acid group -SO3 - and carboxylic acid groups -COO - , can enhance water solubility and surface activity, improve emulsification and dispersion ability; at the same time, it contains long-chain alkyl etherified oxyethylene groups - (CH2CH2O) n - , it has good hydrophobic properties and strong collecting ability. Since each molecule contains anionic and nonionic groups, it has the dual surface chemical properties of nonionic surfactants and anionic surfactants, thus producing unique properties of antistatic and steric stabilization, which can reduce the surface tension of water and form stable foam, and the foam is fine and rich, and the sulfonic acid group -SO3 - It preferentially combines with potassium ions and can selectively adsorb on the surface of soft potassium magnesium sulfate.

[0012] The beneficial effects of the present invention are: (1) The collector of the present invention has a stronger collecting ability and can obtain a higher recovery rate.

[0013] (2) The collector of the present invention has good selectivity and is targetedly adsorbed on the soft potassium magnesium sulfate, thereby achieving the purpose of selectively separating the soft potassium magnesium sulfate.

[0014] (3) The collector of the present invention is safe, harmless, green and environmentally friendly. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0016] Example 1: In this example, the collectors are disodium salt of alcohol ether sulfosuccinate, disodium lauryl sulfosuccinate and disodium lauryl polyoxyethylene ether sulfosuccinate (mass ratio is 1:3:6).

[0017] The application of soft philamate flotation collector in soft philamate flotation is as follows: (1) 180 g of potassium mixed salt ore conversion product (- 0.15mm mass fraction of 67.13%, elemental composition of K + 12.06%, Na + 8.70%, SO4 2- 31.30%, Cl - 20.20%, Mg 2+ 6.14%) and 550 g of pulping mother liquor (element composition is K + 2.48%, Na + 3.19%, SO4 2- 7.15%, Cl - 15.64%, Mg 2+ 4.03%) to obtain flotation pulp; (2) Add 200 g / t of collector to the flotation pulp obtained in step (1), stir at 30°C for 2 min, and scrape for 4 min to obtain soft potassium magnesium sulfate concentrate and tailings in the flotation tank.

[0018] In this embodiment 1, Na + The content is 2.20%, K + The content is 17.30% and the recovery rate is 95.14%.

[0019] Example 2: The collector of this example is disodium salt of alcohol ether sulfosuccinate monoester and disodium lauryl polyoxyethylene ether sulfosuccinate monoester (mass ratio is 3:7).

[0020] (1) 163 g of potassium mixed salt ore conversion product (- 0.15 mm mass fraction of 75.56%, elemental composition of K + 10.46%, Na + 8.60%, SO4 2- 31.68%, Cl - 19.70%, Mg 2+ 5.94%) and 463 g of slurry mother liquor (element composition: K + 3.48%, Na + 2.96%, SO4 2- 6.78%, Cl - 15.01%, Mg 2+ 3.83%) to obtain flotation pulp; (2) 300 g / t of collector was added to the flotation pulp obtained in step (1), the temperature was 25°C, stirred for 2 min, and scraped for 4 min to obtain soft potassium magnesium sulfate concentrate and tailings in the flotation tank.

[0021] In this embodiment 2, Na + The content is 1.87%, K + The content is 16.38% and the recovery rate is 94.00%.

[0022] Example 3: The collectors in this example are disodium lauryl sulfosuccinate and disodium lauryl polyoxyethylene ether sulfosuccinate (mass ratio is 2:6).

[0023] (1) 163 g of potassium mixed salt ore was converted into product (-0.15 mm mass fraction of 85.91%, elemental composition of K + 12.55%, Na + 11.67%, SO4 2- 28.92%, Cl - 20.27%, Mg 2+ 5.72%) and 463 g of slurry mother liquor (element composition: K + 2.98%, Na + 3.68%, SO4 2- 10.93%, Cl - 14.69%, Mg 2+ 4.83%) to obtain flotation pulp; (2) 256 g / t of collector was added to the flotation pulp obtained in step (1), the temperature was 27°C, the mixture was stirred for 2 min, and the flotation was carried out for 4 min to obtain the soft potassium magnesium sulfate concentrate and the tailings in the flotation tank.

[0024] In this embodiment 3, Na+ The content is 2.42%, K + The content was 15.54% and the recovery rate was 91.44%.

[0025] The above describes in detail the specific embodiments of the present invention, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A soft philatelic collector, characterized in that: The collector is one or more of disodium alcohol ether sulfosuccinate monoester, disodium lauryl sulfosuccinate monoester, and disodium lauryl polyoxyethylene ether sulfosuccinate monoester.

2. The philasite collector according to claim 1, wherein: When the collector is a mixture of disodium alcohol ether sulfosuccinate monoester, disodium lauryl sulfosuccinate monoester and disodium lauryl polyoxyethylene ether sulfosuccinate monoester, the mass ratio between them is (1-3): (2-4): (3-7).

3. The application of the langbeinite collector according to claim 1, wherein The specific steps are as follows: (1) Mixing the potassium mixed salt ore conversion product and the slurry mother liquor to obtain flotation slurry; (2) Adding a collector to the flotation pulp obtained in step (1) to carry out flotation to obtain a magnesia concentrate and tailings.

4. The use of the langbeinite collector according to claim 3, wherein The mass fraction of the conversion product with a particle size of less than 0.15 mm in the potassium mixed salt ore conversion product is ≥60%.

5. The use of the langbeinite collector according to claim 3, wherein: The chemical composition of the potassium mixed salt ore conversion product is 10.14~12.96wt% K + 、8.51~11.89wt% Na + 、23.90~32.06wt% SO4 2- 、5.69~6.73wt% Mg 2+ 、14.50~20.58wt% Cl - .

6. The use of the langbeinite collector according to claim 3, wherein: The chemical composition of the slurry mother solution is 2.22~4.47wt% K + 、2.96~3.74wt% Na + 、6.50~11.96wt% SO4 2- 、3.81~4.95 wt% Mg 2+ 、14.58~15.64 Cl - .

7. The use of the langbeinite collector according to claim 3, characterized in that: The flotation pulp temperature in step (2) is 25-30°C.

8. The use of the langbeinite collector according to claim 3, characterized in that: The amount of collector used in step (2) is 150~350 g / t of raw ore.