Slag ball content measuring instrument operation steps - Database & Sql Blog Articles

Supply 1206 blue light 1206 blue LED quality assurance original authentic large number

Probe current voltage pin 420*4450 head diameter 5.0 over current current and voltage pin

GW MB10F 0.8A 1000V rectifier bridge

1, preparation of samples

According to the provisions of GB/T5480.5-2004, select the sample and cut about 11g of the full thickness sample. For glass wool and its products, it is burned at (500 ± 20) °C for more than 30min; for silicic acid cotton and its products, it is burned at (700 ± 20) °C for more than 30min. Remove the binder and weigh it to the nearest 0.01g. The number of samples shall be as specified in the product standard, but shall not be less than three.

2, the test sample

The weighed sample is placed in the corresponding sample cylinder and placed on the press for manual screw press.

3, wetting sample

The pressed sample was taken out, placed in a 250 mL measuring cup, 50 mL of a surfactant solution was added, and stirred well to allow the fibers to be wetted and dispersed in the solution.

4, separation test

Move all of the sample into the separation barrel.

The water source switch was turned on so that the flow rate of the rotameter was indicated as 60 mL/min, and this flow rate was maintained until the fibers were dispersed and suspended in the water.

Increase the water flow to (120-180) mL/min and continue to separate for about 10 minutes.

After the water in the separation cylinder is clarified, the slag discharge valve at the lower end of the separation cylinder is opened, and the slag ball is completely discharged into the standard sieve whose side length is not longer than the side length of the sieve hole specified by the product standard by means of the water flow.

Check if the fibers in the fiber collector contain slag balls. If there are slag balls, they should be placed in the separator for separation.

5, dry

The sieve containing the slag ball is placed in an electric drying oven and dried at a temperature of (105-110) ° C for at least 20 minutes.

6, screening

The dried slag balls were transferred into a standard sieve of the sieve hole specified by the product standard, and three ceramic balls of diameter (20 ± 1) mm were added, and after being covered, the sieve was started and sieved for 15 minutes.

7, weighing

The sieved slag balls were weighed on a balance and the readings were accurate to 0.01 g.

8. Calculation and test results

Calculation

The slag content sh is calculated as follows:

Sh=m/moX100

In the formula:

Sh—the content of the slag ball, the unit is the percentage (%);

m—The mass of the slag ball, in grams (g).

M0 - mass of the sample in grams (g).

9, test results

The test results are expressed as an arithmetic mean, accurate to the first decimal place. At the same time, the pore sizes of all the sieve holes are reported.