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Floating medical agent prepared from food and beverage waste oil and grease and application thereof

A technology for flotation reagents and waste oil, applied in flotation, solid separation and other directions, can solve the problems of ore flotation, high temperature requirements, poor solubility and other problems that have not been involved in the field of ore flotation. good solubility

Inactive Publication Date: 2010-09-29
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the traditional anion collectors are mainly sodium oleate and oxidized paraffin wax soap, etc., they have the following disadvantages; one is the large amount and high cost
Second, the solubility is not good, it must be dissolved under certain conditions
The third is that it has high temperature requirements, and it is inconvenient to use in winter
At present, there have been relevant reports on the recycling and reuse of waste oil at home and abroad, but they have not yet involved the field of ore flotation.

Method used

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  • Floating medical agent prepared from food and beverage waste oil and grease and application thereof
  • Floating medical agent prepared from food and beverage waste oil and grease and application thereof
  • Floating medical agent prepared from food and beverage waste oil and grease and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A flotation agent prepared from waste oil. For its process, see figure 1 , including refining of waste catering oil, hydrolysis and saponification of waste oil under alkaline conditions, salting out of saponification products, washing of crude soap base, and drying.

[0028] The specific implementation method is as follows:

[0029] The first step is saponification reaction: Weigh 50g of waste oil, put it into the reactor, heat and melt it in a water bath, start the stirrer to stir, and slowly add 30% sodium hydroxide prepared with 25g of sodium hydroxide dropwise at a constant temperature of 93°C. Sodium hydroxide solution is about 60mL (the mass ratio of sodium hydroxide to waste oil is 1:2), and the hydrolysis and saponification reaction is carried out for 3.5 hours. The amount of alkali added should be small at the beginning and end, and the amount added in the middle should be large. At the beginning, 1 / 4 of the total alkali amount should be put in, the reaction...

Embodiment 2

[0039] The obtained higher fatty acid sodium is used as an anion collector for reverse flotation of iron ore. The phase analysis of ore samples from Hunan San’an Mining Company found that the elements with recycling value in the ore are mainly iron, with an iron grade of 50.97%. The iron minerals are mainly hematite, accounting for 38.93%. 10.93% and a small amount of iron silicate, iron carbonate and iron sulfide. See Table 1. The particle size of the raw ore is -400um, accounting for 90%. Weigh 200g of the raw ore to obtain a pulp concentration of 25-30%. Reverse flotation is carried out at a temperature of 25-30°C. The flotation process is shown in figure 2. Add NaOH 2000g / t, starch 1000g / t, CaO 1000g / t and use the prepared high-grade fatty acid sodium as the anion collector. The dosage is 1000g / t, and iron ore reverse flotation is carried out to obtain iron concentrate with a grade of 59.23%. The flotation index is 85.3%, see Table 2.

Embodiment 3

[0041] The obtained higher fatty acid sodium is used as an anion collector for reverse flotation of iron ore. The phase analysis of ore samples from Hunan San’an Mining Company found that the elements with recycling value in the ore are mainly iron, with an iron grade of 50.97%. The iron minerals are mainly hematite, accounting for 38.93%. 10.93% and a small amount of iron silicate, iron carbonate and iron sulfide. See Table 1. The particle size of the raw ore is -400um, accounting for 90%. Weigh 200g of the raw ore to obtain a pulp concentration of 25-30%. Reverse flotation is carried out at a temperature of 25-30°C. The flotation process is shown in figure 2 . Add NaOH 670g / t, starch 1000g / t, CaO 1000g / t and use the prepared high-grade fatty acid sodium as an anion collector. The dosage is 1500g / t, and iron ore reverse flotation is carried out to obtain iron ore concentrate with a grade of 64.23%. The recovery rate is The flotation index is 68.9%, see Table 3.

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Abstract

The invention relates to a floating medical agent prepared from food and beverage waste oil and grease and application thereof. The floating medical agent is mainly prepared from the following ingredients through being metered by weight parts: 1 to 1.5 parts of negative ion collecting agents prepared from food and beverage waste oil and grease, 2 parts of NaOH, 0.67 to 1 part of starch and 1 part of CaO. The floating medical agent has the preparation steps of saponification, salting out and baking, wherein during the saponification reaction, the food and beverage waste oil and grease is placed into a container to carry out saponification reaction with NaOH through water bath heating, the ratio of the consumption of the alkali liquor to the mass of the waste oil and grease is 1 / (1.5 to 2.5), after the saponification reaction is completed, excessive NaCl is taken to be prepared into a saturated solution to be added into saponification products for carrying out salting out, products of the upper layer are taken out after the still standing to be baked, and the floating medical agent is obtained. The floating medical agent prepared by the invention has the advantages of strong collecting capability, good selectivity, wide raw material sources and low medical agent cost, realizes the recovery and the utilization of the waste oil and grease, and has good social benefits, environment benefits and economic benefits.

Description

technical field [0001] The invention relates to mineral dressing medicament, in particular to a flotation reagent prepared by using catering waste oil, and describes its application in mineral dressing flotation. Background technique [0002] The predecessor of waste oil is natural oil, and its main component is triglyceride. Saponification of triglycerides can generate glycerin and surfactant alkaline soaps (such as sodium soap, potassium soap, etc.) for washing. Therefore, the comprehensive utilization of waste oil has important practical significance, it can turn waste into treasure and turn harm into profit. But there are few reports about development and utilization. The output of waste oil in my country is very large, and the amount of waste oil accounts for about 20% to 30% of the total consumption of edible oil. At present, the average annual consumption of edible oil in my country is 21 million tons, and the waste oil produced every year is 4 to 8 million tons, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D101/02B03D101/06B03D103/04
Inventor 梅光军翁孝卿李勇宗杰
Owner WUHAN UNIV OF TECH
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