CN1365857A - Ore dressing chemical prepared from tea leaf - Google Patents
Ore dressing chemical prepared from tea leaf Download PDFInfo
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- CN1365857A CN1365857A CN 01106847 CN01106847A CN1365857A CN 1365857 A CN1365857 A CN 1365857A CN 01106847 CN01106847 CN 01106847 CN 01106847 A CN01106847 A CN 01106847A CN 1365857 A CN1365857 A CN 1365857A
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Abstract
An organic amendment for dressing ore is prepared from tea leaves through digestion in alkali solution. The resultant mixture CTP contains low-molecular organic substance, soluble tea cellulose and lignin salt. Its advantages are 100% of utilization rate, low cost, no pison and secondary pollution, and raised dressing selectivity of target mineral.
Description
The present invention relates to a kind of is the method for organic adjustment agent of feedstock production ore dressing and inhibitor with tealeaves.
In the FLOTATION SEPARATION process of multi-metal sulfide, oxide ore, nonmetallic ore, for the purpose mineral are separated with non-purpose mineral floating, improve the quality of flotation concentrate, use the adjustment agent, its purpose is to increase non-purpose mineral surfaces hydrophily, improves the selectivity that the purpose mineral separate with non-purpose mineral floating.At present, the adjustment agent of using in mineral processing industry mostly is some chemical products such as inorganic salts and petrochemicals, there is the little shortcoming of raw material range in the application of these products in mineral processing, particularly some medicament also has certain toxicity, refining chemicals costs an arm and a leg, and its application is subjected to certain restriction.
The purpose of this invention is to provide a kind of efficient, low toxicity, low consumption, cheap organic adjustment agent, be used for the FLOTATION SEPARATION of coloured multi-metal sulfide, oxide ore, nonmetallic ore.
Contain a large amount of little molecular organic compound and cellulose substances in the former tea, see Table 1. tables 1: the main old stem content of the chemical constituents analysis table classes of compounds tender stem of young sprout Lao Ye amplitude % Tea Polyphenols in the tealeaves +++++25～40 amino acid +++++1.5～4 nucleotides++++ phosphide++--caffeine +++++2.5～5.5 theobromines +++++carbohydrate++++ the 0.8-4 lipid+++-organic acid++++ 1.7-2.6 chlorophyll++++ the tea vitamins++++～1mg/g inorganic matter++++～5 volatile materials++++～0.01 crude fibre++++ 8～20
In these organic compounds, can be used as the efficient adjustment agent that can be used as flotation in the mineral process mostly, Tea Polyphenols class, organic acid, phospholipid etc. can directly use as inhibitor, cellulose family can be by transforming, form solubility as sulfonated cellulose, carboxymethyl cellulose etc., can be used as good inhibitor and dispersant in the mineral process.Tea Polyphenols is commonly called as tea tannin, and its main component is a catechin, sees Table 2, and they all have reproducibility, is organic adjustment agent of function admirable. table 2: Catechin in Tea main component title molecular weight content (%) epicatechin EC 290 1-3 epicatechin gallic acid fat ECG 442 3-6 epicatechin digallic acid fat ECG 594-epigallocatechin EGC 306 3-6 EGCG fat EGCG 458 9-13 EGCG fat EGCG2610-catechin C, 290 1-2 nutgall catechin GC, 306 3-4
Tea grounds is leftover bits and pieces and the residue after the extraction of tealeaves high value composition or the residual tea behind the tealeaves Instant Drinks of tealeaves subtractive process; Still residual a spot of organic molecule material and a large amount of cellulose substances; Be generally the 30-47% of leachable thing in the tealeaves as the Aqua Folium Camelliae sinensis extract content, the residual rate of various compositions in tea grounds sees Table 3. tables 3: the main chemical composition that green tea brews in the rate that the bubbles out millet paste of a main component bubbles out rate (%) residual rate polyphenols total amount 44.96 55.04 epigallocatechins 55.88 44.12 EGCG fat 38.21 61.79 free amino acid total amounts 81.58 18.42 arginine 75.42 24.58 glutamic acid 89.49 10.51 theanine 81.16 18.84 caffeines 66.71 33.29 soluble sugar 35.61 64.39
These residuals can obtain the mineral processing organic inhibitor of high-quality after treatment and adjust agent.
The present invention is raw material with tealeaves, by the alkali lye boiling, obtains based on the tea fiber element of small organic molecule, solubility and the mixture C TP of lignin salt.Alkali can be soda ash or caustic soda, and concentration of lye is 0～50%, and the weight ratio of alkali lye and raw material is 0.5～300: 1, and 5 ℃ of immersion or boiling temperatures--100 ℃, the time was more than or equal to 10 minutes.After Separation of Solid and Liquid, resulting solution or the solid of this solution behind concentrate drying are CTP, and residue partly is used for subsequent handling to be continued to handle.
Concentration of lye is big more, and the medium and small molecule content of organics of gained mixture C TP is more little, and the tea fiber of solubility is plain and lignin salt's content is big more; Concentration of lye is more little, and the medium and small molecule content of organics of gained mixture C TP is big more, and the tea fiber of solubility is plain and tea lignin salt content is more little; When concentration of lye is zero promptly to adopt clear water to soak or during boiling, be mainly small organic molecule among the gained mixture C TP.
Residue to carrying out obtaining after the Separation of Solid and Liquid carries out sulfonation or carboxylated.
Sulfonation: residue and sulfonating agent sulphite, oleum or the concentrated sulfuric acid, chlorosulfonic acid boiled altogether can be able to tea fiber or the tea lignosulfonates are main CTP.
Carboxylated: with residue and solid sodium hydroxide effect, make the tea fiber element be converted into sodium alkoxide,, carry out etherification reaction with chloroacetic acid again at 40-60 ℃, with the neutralization of etherificate product, washing, drying obtains the CTP based on the tea carboxymethyl cellulose.
Described small organic molecule comprises Tea Polyphenols class, organic acid etc.
Described raw material tealeaves comprises that a kind of or two kinds mixture in former tea, tealeaves, the tealeaves leftover bits and pieces or three kinds mixture are raw material.
When CTP is used in the mineral process, generally all be made into the aqueous solution of 0.1%-5%, consumption is: when using as the nonferrous metal sulfide mineral depressing agent, consumption is 10-500g/t; When using as the inhibitor of burning ore deposit or non-metallic mineral oxidation, consumption is 50-5000g/t.
The present invention makes full use of the tea resources of China's abundance, raw material can be the leftover bits and pieces behind blue or green tea, tealeaves, the refining tea, can also be that tealeaves high value composition such as Tea Polyphenols extract back or tealeaves through brewing the tea grounds after drinking, raw material availability reaches 100%, is an ecological environment-friendly type invention.It is simple that the present invention simultaneously has production technology, and technological process is short, small investment, and instant effect, the product avirulence of being produced, result of use is good in mineral processing, does not have advantages such as secondary pollution.Can significantly improve the separation selectivity between purpose mineral and the non-purpose mineral, in the grade and yield that improve essential mineral, improve the rate of recovery of association valuable element, for enterprise creates huge economic benefit and social benefit.
Description of drawings: Fig. 1: process chart of the present invention.
Embodiment: 1. the green tea with certain place of production is raw material, and used concentration of lye is zero promptly through the clear water boiling, and 100 gram tealeaves add 500 milliliters in clear water, the boiling of heating, 100 ℃ of temperature, 1 hour time, after the Separation of Solid and Liquid, can get liquid CTP product 565 gram, residue drying 32 grams of weighing.This product is the good inhibitor of sulphide ores such as sulphur, arsenic, is used for the FLOTATION SEPARATION of copper-sulfide mixed concentrate, compares with original production process, reduces lime consumption significantly, and pulp alkalinity reduces, and the valuable element rate of recovery such as associated gold and silver, molybdenum improve.Gained CTP main component is that small organic molecule comprises Tea Polyphenols class, organic acid etc.
2. the tea grounds with somewhere production instant tea is a raw material, through the residual tea of alkali lye boiling 100 grams, add 5% concentration hydrogen sodium hydroxide solution 300ml, in temperature is about 60 ℃, reacted 1 hour, after the Separation of Solid and Liquid, can get main component and be CTP product 376 grams of the tea fiber of solubility plain and tea lignin salt and a small amount of small organic molecule, the residue drying is weighed and 18 is restrained.
3. be raw material with certain real estate tealeaves, alkali lye leaches: tealeaves 100 grams add 5% concentration hydrogen sodium hydroxide solution 400ml, about 60 ℃ of temperature, reacted 1 hour, after the Separation of Solid and Liquid, the tea fiber element and the lignin salt that are able to small organic molecule and solubility are main CTP product 483 grams.
4. producing the resulting residual tea of CTP with example 1 is raw material, sulfonation: with residual tea 100 grams, add 10% sodium hydroxide solution 400ml 150 ℃ of left and right sides boilings 1.5 hours, be cooled to about 60 ℃, add solid water-free sodium sulfite 20 grams, boiled altogether 2 hours, being able to tea fiber or tea lignosulfonates is main CTP.
5. producing the resulting residual tea of CTP with example 1 is raw material, carboxylated: residual tea 100 grams, with the solid sodium hydroxide effect, make the tea fiber element be converted into sodium alkoxide,, carry out etherification reaction with chloroacetic acid again at 40-60 ℃, the etherificate product is neutralized, washing, drying obtains the CTP based on the tea carboxymethyl cellulose.
6. CTP is used for Jiangxi Province's copper mine, carry out the FLOTATION SEPARATION of copper-sulfide mixed concentrate, consumption is 15-100g/t, realize copper sulphur content from, compare with former lime production technology, reduce the lime consumption pulp alkalinity and reduce significantly, valuable element such as associated gold and silver, the molybdenum rate of recovery improves 3.38% respectively, 2.56%, 4.35%, 2,000 ten thousand yuan/year of economic benefits.
7. the zinc sulphur content that CTP is used for the ore deposit, Hunan Province from, consumption 80g/t reduces zinc sulphur content from lime consumption 2.78kg/t, realize zinc sulphur content from, reduced the pH value of milltailings water discharging, protected ecological environment.
8. with CTP, be used for Yunnan Province's copper mine, consumption 120g/t can effectively suppress pyrite, and mispickel and carbonaceous gangue mineral are realized the separation of copper pozzuolite, and the copper concentrate grade and the rate of recovery improve 3% and 2.6% respectively.
9. raw material: the comprehensive sample ore in alum clay mining area, Shanxi, its main chemical compositions is (%)
| ????Al 2O 3 | ????SiO 2 | ????Fe 2O 3 | Alumina silica ratio |
| ????60.40 | ????13.43 | ????4.67 | ????4.50 |
Employing adjusts agent based on the CTP of tea fiber or tea lignosulfonates, and the CTP consumption is roughly selected operation 60g/t, the each 20g/t of selected operation.Make collecting agent with aliphatic acid, carry out froth flotation.
Flow process is: mog accounts for 75%, output flotation concentrate after one roughing, once purging selection, the triple cleaning, flotation tailing for-0.074mm.
Ore dressing and desiliconizing result: concentrate alumina silica ratio 11.02, Al
2O
3The rate of recovery 85.35%.
10. raw material: the comprehensive sample ore in Henan bauxite district, its main chemical compositions are (%)
| ????Al2O3 | ????SiO 2 | ????Fe 2O 3 | Alumina silica ratio |
| ????64.69 | ????11.39 | ????4.93 | ????5.68 |
Employing adjusts agent based on the CTP of tea carboxymethyl cellulose, and the CTP consumption is roughly selected operation 80g/t, the each 20g/t of selected operation.Make collecting agent with aliphatic acid, carry out froth flotation.
Flow process is: mog accounts for 68%, twice and roughly selects, triple cleaning, output flotation concentrate behind the once purging selection, flotation tailing, cleaner tailings for-0.074mm.The cleaner tailings classification, fine fraction of telling and flotation tailing merge directly as mine tailing, and coarse fraction and the flotation concentrate told are merged into final concentrate.Ore dressing and desiliconizing result: concentrate alumina silica ratio 11.85, Al
2O
3The rate of recovery 90.63%.
Claims (6)
1. method for preparing the ore dressing with medicament, it is characterized in that: the present invention is raw material with tealeaves, by the alkali lye boiling, obtain based on the tea fiber element of small organic molecule, solubility and the mixture C TP of lignin salt, alkali can be soda ash or caustic soda, and concentration of lye is 0～50%, and the weight ratio of alkali lye and raw material is 0.5～300: 1,5 ℃ of immersion or boiling temperatures--100 ℃, the time was more than or equal to 10 minutes.
2. method according to claim 1 is characterized in that: to the residue that carries out obtaining after the Separation of Solid and Liquid, boil altogether with sulfonating agent sulphite, oleum or the concentrated sulfuric acid, chlorosulfonic acid that can be able to tea fiber or tea lignosulfonates be main CTP.
3. method according to claim 1, it is characterized in that: to residue and the solid sodium hydroxide effect of carrying out obtaining after the Separation of Solid and Liquid, make the tea fiber element be converted into sodium alkoxide, again at 40-60 ℃, carry out etherification reaction with chloroacetic acid, with the neutralization of etherificate product, washing, drying obtains the CTP based on the tea carboxymethyl cellulose.
4. method according to claim 1 is characterized in that: described small organic molecule comprises Tea Polyphenols class, organic acid etc.
5. method according to claim 1 is characterized in that: described raw material tealeaves comprises that a kind of or two kinds mixture in former tea, tealeaves, the tealeaves leftover bits and pieces or three kinds mixture are raw material.
6. using method by claim 1 or 2 or 3 gained mixture C TP, it is characterized in that: when CTP uses in the mineral process, the general aqueous solution that all is made into 0.1%-5%, consumption is: when using as the nonferrous metal sulfide mineral depressing agent, consumption is 10-500g/t; When using as the inhibitor of burning ore deposit or non-metallic mineral oxidation, consumption is 50-5000g/t.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011068477A CN1151001C (en) | 2001-01-18 | 2001-01-18 | Ore dressing chemical prepared from tea leaf |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011068477A CN1151001C (en) | 2001-01-18 | 2001-01-18 | Ore dressing chemical prepared from tea leaf |
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| CN1365857A true CN1365857A (en) | 2002-08-28 |
| CN1151001C CN1151001C (en) | 2004-05-26 |
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| CNB011068477A Expired - Fee Related CN1151001C (en) | 2001-01-18 | 2001-01-18 | Ore dressing chemical prepared from tea leaf |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101612610B (en) * | 2009-06-22 | 2012-10-03 | 广西华锡集团股份有限公司 | Preparation method of inhibitor of argillaceous and carbonaceous gangue minerals |
| CN107597446A (en) * | 2017-08-31 | 2018-01-19 | 常州欧康铭化工有限公司 | A kind of coal slime collecting agent |
| CN108636612A (en) * | 2018-05-22 | 2018-10-12 | 中南大学 | A kind of metal sulfide depressing agent and its application |
| CN108704767A (en) * | 2018-05-22 | 2018-10-26 | 中南大学 | A kind of composite restrainer and its in separation containing the application in molybdenum and other metal sulfides |
| CN111229451A (en) * | 2020-01-20 | 2020-06-05 | 中南大学 | Flotation separation method of talc and chalcopyrite |
-
2001
- 2001-01-18 CN CNB011068477A patent/CN1151001C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101612610B (en) * | 2009-06-22 | 2012-10-03 | 广西华锡集团股份有限公司 | Preparation method of inhibitor of argillaceous and carbonaceous gangue minerals |
| CN107597446A (en) * | 2017-08-31 | 2018-01-19 | 常州欧康铭化工有限公司 | A kind of coal slime collecting agent |
| CN108636612A (en) * | 2018-05-22 | 2018-10-12 | 中南大学 | A kind of metal sulfide depressing agent and its application |
| CN108704767A (en) * | 2018-05-22 | 2018-10-26 | 中南大学 | A kind of composite restrainer and its in separation containing the application in molybdenum and other metal sulfides |
| CN108704767B (en) * | 2018-05-22 | 2020-05-05 | 中南大学 | Combined inhibitor and application thereof in separation of molybdenum-containing and other metal sulfide ores |
| CN111229451A (en) * | 2020-01-20 | 2020-06-05 | 中南大学 | Flotation separation method of talc and chalcopyrite |
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| Publication number | Publication date |
|---|---|
| CN1151001C (en) | 2004-05-26 |
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