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A kind of scheelite collector and its preparation method and application

A collector, scheelite technology, applied in solid separation, flotation and other directions, can solve the problems of poor selective collection effect and high chemical price, and achieve the effect of high efficiency, low cost and strong practicability

Active Publication Date: 2020-07-10
INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used scheelite collectors are fatty acid agents such as oleic acid soap, oxidized paraffin soap, and tar soap. The selective collection effect is poor and the price of the agent is high. In order to improve its selective collection ability, scientific research work It has been modified and compounded for a long time

Method used

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  • A kind of scheelite collector and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Heat waste oil containing 15% palmitic acid, 5% octadecanoic acid, 40% oleic acid and 15% linoleic acid to 60°C, and filter out impurities with a 0.15mm sieve;

[0017] (2) Take 10 parts of purified gutter oil and add 1 part of 30% H 2 SO 4 Solution, after stirring for 30 minutes, add 3 parts of 8% sodium chloride solution, wash 3 times;

[0018] (3) Stand still for 10 hours, the upper layer is an organic phase, the lower layer is an aqueous phase, and the lower aqueous phase is discharged to obtain an organic phase;

[0019] (4) Add 20 parts of 30% NaOH solution to 3 parts of organic phase and stir for 2 hours to obtain scheelite collector.

[0020] The scheelite collector prepared in this example is a light yellow to brown-red liquid, soluble in water at a temperature ≥ 20°C, and the aqueous solution is a transparent light yellow solution with a water solubility of 12%. Its infrared spectrum is shown in figure 1 Shown, the absorption peak (cm -1 ): 3371, 3006....

Embodiment 2

[0022] (1) Heat waste oil containing 25% palmitic acid, 10% octadecanoic acid, 20% oleic acid and 20% linoleic acid to 40°C, and filter out impurities with a 0.15mm sieve;

[0023] (2) Take 10 parts of purified gutter oil and add 3 parts of 20% H 2 SO 4 Solution, after stirring for 30 minutes, add 4 parts of 10% sodium chloride solution, wash 2 times;

[0024] (3) Stand still for 6 hours, the upper layer is an organic phase, the lower layer is an aqueous phase, and the lower aqueous phase is discharged to obtain an organic phase;

[0025] (4) Add 40 parts of 50% NaOH solution to 10 parts of organic phase and stir for 3 hours to obtain scheelite collector.

[0026] The scheelite collector prepared in this example is a light yellow to brownish red liquid, soluble in water at a temperature ≥ 20°C, and the aqueous solution is a transparent light yellow solution with a water solubility of 15%.

Embodiment 3

[0028] (1) Heat waste oil containing 40% palmitic acid, 6% octadecanoic acid, 23% oleic acid and 10% linoleic acid to 45°C, and filter out impurities with a 0.15mm sieve;

[0029] (2) Take 10 parts of purified gutter oil and add 1 part of 25% H 2 SO 4 Solution, after stirring for 30 minutes, add 5 parts of 5% sodium chloride solution, wash 2 times;

[0030] (3) Stand still for 3 hours, the upper layer is an organic phase, the lower layer is an aqueous phase, and the lower aqueous phase is discharged to obtain an organic phase;

[0031] (4) Add 25 parts of 20% NaOH solution to 4 parts of organic phase and stir for 1 hour to obtain scheelite collector.

[0032] The scheelite collector prepared in this example is a light yellow to brown-red liquid, soluble in water at a temperature ≥ 20°C, and the aqueous solution is a transparent light yellow solution with a water solubility of 10%.

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Abstract

The invention discloses a scheelite collector and a preparation method and application thereof. The scheelite collector is prepared from drainage oil and can be prepared through the following steps that drainage oil is heated to 40-60 DEG C, impurities are filtered out through a sieve with the size of sieve meshes being 0.15 mm; 10 parts of drainage oil obtained through the last step, 1-3 parts ofa 20-30% H2SO4 solution is added, and after stirring is conducted for 30 min, 3-5 parts of a 5-10% sodium chloride solution is used for washing for two to three times; still standing is conducted for3-10 h, and upper layer organic phases are taken; and 20-40 parts of a 20-50% NaOH solution is added according to 3-10 parts of the organic phases, stirring is conducted for 1-3 h, and the scheelitecollector is obtained. The scheelite collector provided by the invention is simple in process, easy to operate, high in practicability and capable of achieving harmless utilization of drainage oil andeffectively lowering agent cost. Drainage oil containing 15-40% of palmitic acid, 5-10% of octadecanoic acid, 20-40% of oleic acid and 10-20% of linoleic acid is suitable for being used for the scheelite collector.

Description

technical field [0001] The invention relates to the technical field of waste recycling, in particular to a waste oil scheelite collector and a preparation method and application thereof. Background technique [0002] Scheelite collectors are mostly anion collectors, and the most commonly used anion collectors are fatty acid agents. Commonly used scheelite collectors are fatty acid agents such as oleic acid soap, oxidized paraffin soap, and tar soap. The selective collection effect is poor and the price of the agent is high. In order to improve its selective collection ability, scientific research work It has been modified and compounded by researchers for a long time. At the same time, using low-cost raw materials to develop scheelite collectors is one of the current research directions for beneficiation agents. [0003] Waste oil generally refers to all kinds of low-quality oils that exist in daily life, such as recycled food oil and repeatedly used frying oil, which have...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/018B03D101/02B03D103/04
CPCB03D1/018B03D2201/02B03D2203/04
Inventor 周晓彤邓丽红关通付广钦
Owner INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI