JP2505677B2 - Melt characteristic test equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a melting characteristic testing device used for measuring the fluidity of viscous melts such as slag and glass.

[0002]

2. Description of the Related Art As one of the methods for evaluating the melting characteristics of viscous melts such as slag and glass, a sample placed in a crucible made of alumina porcelain is melted at 1400 ° C. for 1 hour in an electric furnace, then taken out, and then placed on a horizontal surface. The flow distance of the melt was measured by quickly reversing it on a graphite plate with a vertical groove inclined at an angle of 30 degrees with respect to, and the value (fluidization rate) was calculated by dividing the flowing weight by the sample weight. The method of doing was adopted.

Conventionally, however, since all such operations have been performed manually, the problem that the speed of reversing the crucible, the distance between the graphite plate and the crucible, etc. is not constant, and the measurement results tend to vary from person to person. there were. Further, in this measurement, since a high-temperature melt is flown down from the crucible, there is a problem that a measurer may touch the scattered melt and get burned.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, and provides a melting characteristic test apparatus in which there is little variation in measurement results from person to person and there is no risk of burns by the person making the measurement. It was done by.

[0005]

SUMMARY OF THE INVENTION The present invention, which has been made to solve the above-mentioned problems, has a horizontal rotating shaft and its rotating device mounted on the upper part of a column, and the bottom of a crucible at the tip of this rotating shaft. It is characterized in that a crucible holder for supporting the crucible and a crucible stopper for pressing down the mouth portion of the crucible are provided.

[0006]

The present invention will be described below in more detail with reference to the illustrated embodiments. In FIG. 1, 1 is a mount, 2 is a post, and 3
Is a rotating device attached to the upper part of the column 2. The rotating device 3 may be any device capable of rotating the horizontal rotating shaft 4 by 180 ° or more. In this embodiment, an air motor driven by compressed air supplied from the air compressor 5 is used. , Other rotating devices may be used.

A flat crucible receiver 6 and a slide type crucible stopper 7 are provided at the tip of the horizontal rotary shaft 4. The crucible receiver 6 has a hole 9 into which the bottom surface of the crucible 8 is fitted. The crucible stopper 7 is slidably supported by a bracket 10 extending vertically from the end of the crucible receiver 6, and is for pressing the mouth of the crucible 8 supported by the crucible receiver 6.

[0008]

In order to measure the melting characteristics of a viscous melt such as slag or glass by using the melting characteristic testing apparatus of the present invention thus constructed, the sample is placed in the crucible 8 made of alumina porcelain as in the conventional case. After melting in an electric furnace for 1 hour at 1400 ° C, take out the crucible 8 from the furnace, and place the crucible holder 6
The mouth portion is pressed by the crucible stopper 7 put in the hole 9 of the.

Further, as shown in FIG. 2, a graphite plate 11 with vertical grooves inclined at an angle of 30 degrees with respect to a horizontal plane is previously installed below the melting characteristic test device, and is horizontally rotated by a rotating device 3. The crucible 8 in which the rotary shaft 4 is rotated at a constant speed is inverted, and the sample melted from the inside of the crucible 8 is flowed down onto the graphite plate 11. Then, the flow distance is measured, and a value (fluidization rate) obtained by dividing the flowing weight by the sample weight is calculated.

At this time, unlike the conventional manual reversal method, the crucible 8 is automatically reversed by the rotating device 3, so that the measurement can be performed with little variation by the operator. For example, CaO / SiO ₂ = 0.480 and CaO / SiO ₂ = 1.07
1) A, B 2 kinds of sewage sludge dewatering cake incineration ash were measured by the five methods by the conventional method and by using the apparatus of the present invention, and the time required for removing the crucible from the electric furnace and completing the inversion Then, the variation in the measured values of the flow distance and the measured value of the fluidization rate was examined. Table 1 shows the results. The numbers in the table are the difference between the maximum and minimum values.

[0011]

[Table 1]

[0012]

As described above, according to the melting characteristic testing apparatus of the present invention, accurate data with little variation by the measurer can be obtained, and it is not necessary to manually turn over the crucible. You can also avoid the risk of burns. Therefore, the present invention has an extremely great contribution to the industrial development as a melting characteristic test apparatus that solves the conventional problems.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a partially cutaway front view showing a usage state of the device of the embodiment.

[Explanation of symbols]

 2 Supports 3 Rotating device 4 Rotating shaft 6 Crucible receiver 7 Crucible stopper 8 Crucible

Claims (1)

(57) [Claims] 1. A horizontal rotary shaft and its rotating device are mounted on the upper part of the column, and a crucible receiver for supporting the bottom of the crucible and a crucible stopper for holding the mouth of the crucible are provided at the tip of the rotary shaft. A melting property testing device characterized by the above.