A kind of deep sea glass floating ball and preparation method thereof
A glass and floating ball technology, used in glass manufacturing equipment, glass molding, buoys and other directions, can solve problems such as difficulties, pollution production, affecting glass optical properties, etc., and achieve the effect of uniform composition and low cost
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[0044] The present invention also provides a kind of preparation method of deep-sea glass buoy, comprising the following steps:
[0045] A) In terms of mass fraction, 55-65wt% of silicon oxide, 18-25wt% of aluminum oxide, 3-6wt% of lithium oxide; 2-5wt% of magnesium oxide, 2-6wt% of sodium oxide, 0.5- 2wt% potassium oxide, 0.5-1.5wt% boron oxide, 0-1wt% zirconia and 0-1wt% titanium oxide are mixed and ball milled, dried and sieved after ball milling to obtain a mixed powder;
[0046] B) melting the mixed powder at high temperature, clarifying and homogenizing to obtain a glass liquid, pouring the glass liquid into deionized water to obtain glass particles;
[0047] C) adding a binder to the glass granules, grinding and granulating, and then compressing the granulated glass granules to obtain a shaped glass hemisphere;
[0048] D) calcining the formed glass hemisphere at 400-6000°C, then raising the temperature to 800-900°C at a rate of 1-5°C / min, keeping it warm for 0.5-1 hou...
Embodiment 1
[0073] According to the raw material formula in Table 1, mix the raw materials, use the melting method to melt and clarify the batch materials at 1600 ° C for 3 hours, pour the glass liquid into deionized water to obtain glass particles, and then add a binder to make it in an agate bowl. grain. Put the granulated powder under the hydraulic press, and press it into a glass hemisphere with uniform diameter and wall thickness by using the manufactured hemispherical abrasive.
[0074] Put the glass sample in a muffle furnace, calcinate at 450°C for 1 hour to fully discharge the binder, then raise the temperature to the preset nucleation temperature (650°C) at a heating rate of 3.5°C / min, and then keep it for half an hour. Then raise the temperature to the preset crystallization temperature (750° C.) at a heating rate of 3.5° C. / min for 1 hour. After the heat treatment, cool down to room temperature with the furnace and take it out to obtain a glass hemisphere.
[0075] Put the gl...
Embodiment 2
[0077] According to the raw material formula in Table 1, the raw materials were mixed, and the batch was melted and clarified at 1600°C for 3.5 hours by melting method, then poured into deionized water to obtain glass particles, and then added a binder to granulate in an agate bowl. Put the granulated powder under the hydraulic press, and press it into a glass hemisphere with uniform diameter and wall thickness by using the manufactured hemispherical abrasive.
[0078] Put the annealed glass sample into a muffle furnace, calcinate at 450°C for 1 hour to fully discharge the binder, then raise the temperature to the preset nucleation temperature (700°C) at a heating rate of 3.5°C / min and keep it warm After half an hour, the temperature was raised to the preset crystallization temperature (800°C) at a heating rate of 3.5°C / min and kept for 1 hour. After the heat treatment was completed, it was lowered to room temperature with the furnace and taken out to obtain a deep-sea glass he...
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