JT-SL series raw grinding aid
First, product introduction
The main components of this series of cement raw grinding aid are organic surfactants, complex alcoholamine substances, and other polyols as auxiliary liquid products, generally brown non-transparent, no irritating odor, not harmful to human health。
Specifications: 250 kg/barrel, 1 ton/barrel, bulk three specifications。
密度：（20℃±1℃）：1.15-1.26 (g/cm3)
PH value: (20℃±1℃) : 6 ~ 9
Solid content: 36±1 (%)
Shelf life :12 months
Recommended dosage: 0 of cement raw material quality.1％-0.2%（m/m）
The use of the product in cement raw material does not affect the composition of cement raw material
2. Scope of application and use effect
It is suitable for pipe mill and vertical mill to grind cement raw material, improve the output of mill, reduce the power consumption of grinding, improve the decomposition rate of cement raw material, improve the clinker quality, and improve the output of kiln。
When it is used to produce cement raw material in tubular mill, under the condition of keeping the fineness of cement raw material consistent, the grinding aid can increase the output of mill by more than 10%, reduce the power consumption by 10-15%, improve the decomposition rate of cement raw material, improve the clinker quality, reduce the total SO2 emission in the exhaust gas of kiln tail, and reduce the coal consumption。Solve the shortage of cement raw material supply and reduce equipment maintenance costs。
Used in the production of cement raw material by vertical mill，Under the condition of maintaining the same fineness of cement raw material，The use of the grinding aid can increase the yield of the mill by 5-10%，Reduce power consumption by 4-8%，Stabilize the mill layer thickness，Reduce mill vibration speed，Improve the cement raw material decomposition rate, improve the clinker quality, reduce the total SO2 emission in the kiln exhaust gas，Reduce coal consumption。Solve the shortage of cement raw material supply and reduce equipment maintenance costs。
3. Use examples
Case 1: YF Cement Company
Φ4.Comparison before and after JT-SL10A grinding aid was used in the production of cement raw materials by 2*8 single bin air sweep mill. Specific results are shown in Table 1。
Table 1: Statistical changes of raw cement before and after adding JT-SL10A grinding aid (average value)
|
时间 |
Grinding aid content (%) |
Yield of raw mill |
Electricity consumption (kWh) |
Fineness of raw material (80μm sieve %) |
Particle content below 10μm (%) |
Particle content above 200μm (%) |
Raw material decomposition rate (%) |
Clinker coal consumption standard coal (kg/t) |
|
Blanking period |
0 |
166 |
23.07 |
17.9 |
34.58 |
2.19 |
93.19 |
106.2 |
|
Experimental period |
0.1 |
185 |
20.66 |
16.8 |
31.20 |
1.88 |
95.36 |
104.1 |
|
Contrast difference |
|
+19 |
-2.41 |
-1.1 |
-3.38 |
-0.31 |
+2.17 |
-2.1 |
From the comparison before and after the experiment, it can be seen that after adding the special grinding aid for raw materials, the average output of the mill is increased by 19 tons/hour, and the yield increase is up to 11.4%, power consumption decreased by an average of 2.41KWh, the fineness of raw material products decreased, the particle content below 10μm, the particle content above 200μm decreased, the particle size of raw material products tended to be more concentrated, the raw material decomposition rate increased, more conducive to clinker calcination, tons of clinker coal consumption of standard coal can be reduced by 2.1kg。
Case 2: HH Cement Company
ATOX-50 vertical mill, before and after using JT-SH20A grinding aid to produce cement raw materials, specific results are shown in Table 2。
Table 2: Statistical changes of raw cement before and after adding JT-SL20A grinding aid (average value)
|
时间 |
Grinding aid content (%) |
Raw mill yield (t/h) |
Electricity consumption (kWh) |
Fineness of raw material (80μm sieve %) |
Mill vibration |
Raw material decomposition rate (%) |
Clinker coal consumption standard coal (kg/t) |
|
Blanking period |
0 |
386 |
16.65 |
19.2 |
2.66 |
93.32 |
109.3 |
|
Experimental period |
0.2 |
416 |
15.62 |
18.8 |
2.45 |
94.46 |
106.1 |
|
Contrast difference |
|
+30 |
-1.03 |
-0.4 |
-0.21 |
+1.14 |
-3.2 |
From the comparison before and after the experiment, it can be seen that after adding the special grinding aid for raw materials, the average output of the mill is increased by 30 tons/hour, and the yield increase is 7.8%, power consumption decreased by an average of 1.03KWh, power consumption decreased by 6.2%, the fineness of raw material products has been reduced, the vibration speed of the mill has been reduced, the operation stability of the vertical mill has been improved, the decomposition rate of raw material has been improved, which is more conducive to clinker calcination, and the consumption of standard coal can be reduced by 3.2kg。
Fourth, the value of the use of raw grinding AIDS
The economic value generated by the use of special grinding AIDS in the production of cement raw materials is divided into two parts, one is the direct economic value and the other is the indirect economic value。
(1) Direct economic value:
1.The output of the mill is increased, the output of tube grinding is more than 10%, and the power consumption is reduced by 10-15%.Vertical mill increases production by 5-10% and reduces power consumption by 4-8%。
2.The mill output increases, the mill running rate decreases and the mill annual maintenance cost decreases.
3.The decomposition rate of cement raw material is increased, and the coal consumption of cement clinker is reduced, and the standard coal can be reduced by 2-4kg/t.
4.Cement raw material production per unit time increased, cement clinker production increased;The clinker is easier to burn, and the clinker output per unit time can be increased by 3-5%;Total cement clinker profit increased to compensate for the lack of clinker supply。
(2) Indirect economic value:
1.The distribution of raw cement particles is relatively concentrated, the amount of clinker kiln skin is reduced, the treatment time is reduced, and the accident rate of kiln shutdown is reduced.
2.The fine particle of cement raw material is reduced, the amount of dust collection and ash return is reduced, and the quality stability of cement clinker is improved。
3.The decomposition rate of calcium carbonate is increased, the CaO generated in advance enhances the adsorption and reaction of SO2, and reduces the total emission of SO2 in the exhaust gas of kiln tail.
5. Storage methods and conditions
This series of grinding aid is weakly alkaline liquid, it is recommended to use plastic or stainless steel equipment for storage, closed storage, storage equipment should be placed circulation device, cyclic treatment of the product regularly, to ensure product uniformity。The recommended storage temperature is -10 ° C to 40 ° C。
6. The method of adding when used
1.When it is not necessary to raise the height of the addition, the metering pump can be used directly to measure the addition;
2.When it is necessary to increase the height of the grinding aid, it is generally added by two-stage pumping.
The diagram is as follows:
For companies that use our grinding AIDS, we provide our customers with storage tanks and related metering devices, as well as methods for detection and control of added quantities。
7. Precautions
(1) The grinding aid shall be used after passing the inspection。Acceptance test methods are:
1.Homogeneity acceptance, the density, water content, pH value and color of the newly arrived grinding aid are tested, and whether the indicators are within the allowable error range;
2.Small mill acceptance, the same batch of cement raw materials, according to the proportion of cement raw materials production qualified grinding aid and new grinding aid grinding comparison, each grinding aid at the same time grinding 2 grinding, skip the first grinding, use the second grinding for various indicators detection, cement raw material 80μm sieve allowance is positive or negative 0.Within 5% is qualified;
The first method is generally used when the grinding aid is used continuously, and the second method is used when there is a large difference in the quality of the grinding aid。
(2) When the barreled grinding aid is handled and stored, it should be prevented from falling, smashing, external extrusion and close to high temperature, and the height of the pile should not exceed two barrels;
(C) before use, first check the company logo and then open the cover, confirm the product and model is correct before use;
(4) This product is slightly corrosive to the skin, the skin contact should be washed with water, but not ingested;
(5) When using this product, when the ambient temperature is lower than -5℃ for 5 consecutive days, insulation measures should be taken to prevent the increase of product viscosity affecting normal use。
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Multison Holdings Group
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