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It can be seen from Table 1 that when the ore is of the same nature, the flotation conditions are the same, and the dosage of the agent is the same, when the isocyanide is used as the collector, the tailings grade is in the middle, that is, its collecting ability is slightly lower; When propylene xanthate is a collector, its tailings grade is the highest, that is, its harvesting ability is the weakest among the three types of collectors.
Preparation and collection performance of alkyl xanthogen acrylonitrile ester
Alkyl xanthogen acrylonitrile ester is also a derivative of xanthate, which has the following structural formula:
S
/
ROC-SCH=CHCN
R is an alkyl group having up to twelve carbon atoms or an aryl group, but R is an alkyl group as discussed herein.
1. The method for preparing alkyl acrylonitrile acrylate can be prepared by using cis or trans β-halogenated acrylonitrile with the corresponding xanthate, and the reaction formula is as follows:
S S
/ /
ROC—SNa+XCH=CHCN—→ROC—SCH=CHCN+NaX
In the reaction formula, X may be chlorine or bromine , and the xanthate may be sodium xanthate or potassium xanthate, and the reaction may be carried out in water or an organic solvent (such as acetone, chloroform, diethyl ether, etc.), and the reaction temperature is 0°. - 30 ° C, with methyl, ethyl, isopropyl, n-butyl, sec-butyl, pentane, hexanyl, dodecyl xanthate and β-halogenated acrylonitrile, respectively, to obtain the corresponding alkyl xanthate propylene Nitrile ester.
2. Acrylonitrile alkyl ester of xanthan COLLECTING copper ore COLLECTING alkyl xanthate ester of Copper acrylonitrile, alkyl xanthate ester propionitrile as collector, tailings The copper-containing grade is the lowest, that is, its ability to capture is the strongest; the comparison of alkylxanthic acid with alkylxanthate propionitrile ester and alkylxanthate ester is shown in Table 1.
Test results of several chemical flotation copper sulfide ore Table 1
Ore and flotation conditions
Collector
Tailings containing copper
Types of
Dosage
(g / ton)
Copper sulfide ore containing 0.68% Cu
PH = 7.8
Polypropylene glycol 45 g / ton
Floating for 4 minutes
Copper sulfide containing 0.8% Cu
PH = 7.7
Coal oil 15 g / t
Cresol 40 g / ton
Floating for 6 minutes
(1) Alkyl xanthogen acrylate:
S
/
Propyl amyl phthalate C 5 H 11 OC-SCH 2 CH=CH 2
(2) alkyl xanthogen propionitrile ester:
S
/
Isopropyl xanthogen propionitrile ester (CH 5 ) 2 CHOC-SCH 2 CH 2 CN
S
/
Sec-butylxanthine propionitrile C 2 H 5 CHOC-SCH 2 CH 2 CN
                       Â
CH 3
S
/
Pentylxanthine propionitrile C 5 H 11 OC-SCH 2 CH 2 CN
S
/
Ethyl xanthogen propionitrile ester C 2 H 5 CO-SCH 2 CH 2 CN
(3) Alkyl xanthogen acrylonitrile ester:
Isopropyl xanthogen acrylonitrile ester (cis)
S
/
(CH 3 ) 2 CHOC—SCH = CHCN
Isopropyl xanthogen acrylonitrile ester (trans)
S
/
(CH 3 ) 2 CHOC—SCH = CHCN
Isopropyl xanthogen acrylonitrile ester (cis)
Ethyl valerate (cis)
S
/
C 5 H 11 OCSCH = CHCN
Ethyl xanthogen acrylonitrile ester (cis)
S
/
C 2 H 5 OC—SCH = CHCN
22.5
22.5
22.5
22.5
22.5
22.5
13.6
13.5
13.5
13.5
0.16
0.09
0.10
0.11
0.21
0.081
0.13
0.16
0.16
0.17
Surface treatment
E.G,HDG
Type :
1: hinge knot
2: s knot
3: fixed knot
Application
grassland, forestry and highway
Packaging
plastic film, wooden pallet, bulk package or as your demand
Top & Bottom Line
Intermediate Line
Line Wires
Wire Dia (mm)
Wire Dia(mm)
Distance between
Roll Height ( cm)
Roll Length(m)
6
2.5
2.0
15
60
50
6
2.5
2.0
15
80
50
8
2.5
2.0
15
80
50
9
2.5
2.0
15
80
50
8
2.5
2.0
15
100
50
11
2.5
2.0
15
100
50
9
2.5
2.0
15
120
50
13
2.5
2.0
15
120
50
13
2.5
2.0
15
150
50
15
2.5
2.0
15
150
50
17
2.5
2.0
15
200
50
Other special specification is available by customer request.