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Shandong Energy Zaozhuang Mining Group Tianchen Mine Coal Preparation Plant Coal Flotation Agent Test Report
2019/1/25 14:48:03    本站    365

From 17thJan to 20thJan, Shandong ChaoMei Clean Energy Co. LTD.( Referred to as “ChaoMei Clean Energy”) have conducted a flotation agent test in the Tianchen Mine coal preparation plant. The test was started from middle shift 14 pm and took three shifts,it was successfully completed under the joint efforts of the factory testers and the worker of the Tianchen Coal Preparation plant,  The summary is as follows:

First, production and operation

The test production run time totally 62 hours and 30 minutes, the raw coal was totally 20037 tons, and the average hourly processing capacity was 320.59 tons

Second,comparative analysis of the flotation agent dosage

(1)The flotation agent dosage of ChaoMei clean Energy during test period

1. The total amount of collector is 2590L,the density of collector  is 0.803kg/L;

2. The total amount of frother is 680L, the density of frother is 0.929kg/L;

After calculated, the amount of collectors is 2.08Tons, the amount of frother is 0.632 tons.

(2) The flotation agent dosage per ton of raw coal

1. Collector amount per ton raw coal: 0.104kg/Ton raw coal

2. Frother amount per ton raw coal: 0.032kg/Ton raw coal

3.Total: 0.136kg/Ton raw coal

4.reagent proportion:(Collector:Frother)=3.25:1

(3)Before test, the morning shift dosage of Flotation agent from 1st-17th Jan

1. Collector amount per ton raw coal: 0.159kg/Ton raw coal

2. Frother amount per ton raw coal: 0.042kg/Ton raw coal

3.Total: 0.201kg/Ton raw coal

4.reagent proportion:(Collector:Frother)=3.74:1

(4) Compared the dosage of test flotation agent

The test flotation agent (ChaoMei clean Energy) dosage is less than original flotation agent:

1. Reduced the dosage of collectors by 0.055kg/tons of raw coal

2. Reduced the dosage of frothers by 0.01kg/tons of raw coal

3. Reduced the totally dosage of flotation agent by 0.065kg/ tons of raw coal

4. Reduced the reagent proportion (collector: frother) by 0.49

Three, the comparison data before and after test

(1)The Flotation test data before test from 1stto 17thJan.

项目Item

入浮浓度Floating concentration

入浮灰分%

Floating ash%

浮精灰分% Clean coal ash%

尾矿灰分% Tailing ash%

抽出率% Extraction rate%

一次浮选机First Flotation Machine

156.26

22.98

9.47

67.96

76.90

二次浮选机Second Flotation Machine

80

13

7.84

69.89

91.69

(2)The flotation data during test

项目Item

入浮浓度Floating concentration

入浮灰分% Floating ash%

浮精灰分% Clean coal ash%

尾矿灰分% Tailing ash%

抽出率% Extraction rate%

一次浮选机First Flotation Machine

150.66

23.79

9.36

75.41

78.15

二次浮选机Second Flotation Machine

80

13

7.78

76.09

92.36

(3)Data comparison

During test period, due to the reasonable ratio of raw coal and suitable washing amount , the first floating concentration was decreased, and floating ash increased 0.81%; both clean coal and tailing met the index requirement of coal preparation plant, fully floated, the ash of tailing improved a lot. First flotation extraction rate increased 1.25%; second flotation extraction rate increased 0.67%;total extraction rate increased 0.85% (as per the calculate formula by coal preparation plant: total extraction rate=First clean coal extraction rate*31%+Second clean coal extraction rate*69%)。

Four  Summary

(1) Chaomei clean energy reagent appearance color transparent, small odour, good liquidity, flotation driver reported better. In the production process, the dosing system is continuous an stable, the foam layer is fine and solid, the defoaming effect is good and the foam liquidity is good. The cleaned coal was fully recovery, the clean coal ash and tailing index were good.

(2)Use Chaomei clean energy reagent, it will save 143 Tons/year than original reagent(frother can save 22 Tons/year, collector can save 121tons/year), and use Chaomei clean energy reagent the comprehensive dosage is 0.136kg/ton of raw coal, but use original reagent the dosage is 0.201kg/ton of raw material, it can save 32.34%.

(3) If use Chamei clean energy reagent , by comprehensive of clean coal recovery and the price of reagent, it can increase the economic benefit of 1307200RMB/year.

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