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Titanium-containing high-niobium and low-lanthanum optical glass preparation method

A technology of optical glass and high niobium, which is applied in the field of preparation of high niobium and low lanthanum optical glass, can solve the problems of unsolvable glass crystallization problems, large glass crystallization tendency, increased glass erosion, etc., so as to shorten the glass clarification and homogenization Effects of time, glass crystallization tendency, and glass defects

Active Publication Date: 2016-01-13
湖北戈碧迦光电科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the crystallization tendency of the glass in this system is large, and the temperature of the glass produced in small batches is cooled quickly. The problem of glass crystallization in large-scale production cannot be solved, and the SrO and BaO components contained will increase the density of the glass and increase the erosion of the glass on the crucible.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A preparation method of titanium-containing high-niobium and low-lanthanum optical glass,

[0042] The first step, batch preparation

[0043] 1) Weigh 20.8wt% quartz sand, 9wt% anhydrous boric anhydride, 4wt% barium carbonate, 2.5wt% barium nitrate, 11wt% titanium dioxide, 15wt% lanthanum trioxide, 15.65 The calcium carbonate of wt%, the zirconium dioxide of 3wt%, the anhydrous sodium carbonate of 3wt%, the niobium pentoxide of 15wt%, the aluminum hydroxide of 1wt%, the antimony trioxide of 0.05wt%;

[0044] 2) Put the weighed anhydrous boric anhydride, barium nitrate, calcium carbonate, and antimony trioxide into the V-shaped mixer and mix for 15 minutes to form a small mixed material;

[0045] 3) Put the uniformly mixed small material and the remaining several other raw materials into the QH type strong mixer, spray into the distilled water with a mass fraction of 3% of the batch material, mix for 3 minutes, and mix until the uniformity is greater than 98.5%. of ing...

Embodiment 2

[0066] A preparation method of titanium-containing high-niobium and low-lanthanum optical glass,

[0067] The first step, batch preparation

[0068] 1) Weigh 18wt% of quartz sand, 11wt% of anhydrous boric anhydride, 5wt% of barium carbonate, 3wt% of barium nitrate, 10wt% of titanium dioxide, 16wt% of lanthanum trioxide, 14wt% of Calcium carbonate, 3.3wt% zirconium dioxide, 2.6wt% anhydrous sodium carbonate, 16wt% niobium pentoxide, 1.07wt% aluminum hydroxide, 0.03wt% antimony trioxide;

[0069] 2) Put the weighed anhydrous boric anhydride, barium nitrate, calcium carbonate, and antimony trioxide into the V-shaped mixer and mix for 20 minutes to form a small mixed material;

[0070] 3) Put the uniformly mixed small material and the remaining several other raw materials into the QH type strong mixer, spray into the distilled water with a mass fraction of 4% of the batch material, mix for 4 minutes, and mix until the uniformity is greater than 98.5%. of ingredients.

[0071] T...

Embodiment 3

[0090] A preparation method of titanium-containing high-niobium and low-lanthanum optical glass,

[0091] The first step, batch preparation

[0092] 1) Weigh 19wt% of quartz sand, 8wt% of anhydrous boric anhydride, 3wt% of barium carbonate, 2wt% of barium nitrate, 9wt% of titanium dioxide, 17wt% of lanthanum trioxide, 16wt% of Calcium carbonate, 4wt% zirconium dioxide, 2wt% anhydrous sodium carbonate, 16wt% niobium pentoxide, 3.96wt% aluminum hydroxide, 0.04wt% antimony trioxide;

[0093] 2) Put the weighed anhydrous boric anhydride, barium nitrate, calcium carbonate, and antimony trioxide into the V-shaped mixer and mix for 15 minutes to form a small mixed material;

[0094] 3) Put the uniformly mixed small material and the remaining several other raw materials into the QH type powerful mixer, spray into the distilled water with a mass fraction of 5% of the batch material, mix for 5 minutes, and mix until the uniformity is greater than 98.5%. of ingredients.

[0095] The s...

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Abstract

The invention discloses a titanium-containing high-niobium and low-lanthanum optical glass preparation method comprising the following steps: (1) uniformly mixing the following raw materials: quartz sand, anhydrous boric anhydride, barium carbonate, barium nitrate, titanium dioxide, lanthanum trioxide, calcium carbonate, zirconium dioxide, anhydrous sodium carbonate, niobium pentoxide, aluminum hydroxide and antimonous oxide to prepare a mixture material; (2) high-temperature melting the mixture material in an air atmosphere to obtain glass liquid; (3) cast-moulding the glass liquid and rapidly cooling the glass to room temperature; (4) crushing the glass, adding less amount of raw materials and re-melting the glass in a multi-grade melting furnace; (5) stirring, clarifying and homogenizing the glass liquid and moulding glass; and (6) performing inspection and secondary annealing to prepare the titanium-containing, high-lanthanum and low-niobium optical glass. The optical glass is high in refractive index, is low in chromatic dispersion and is high in light transmittance, is low in crystallization tendency, is excellent in chemical stability, is free of heavy metal oxides, such as Gd2O3, Ta2O5, PbO, WO3 and the like, can achieve large size, zero defect and continuous production, is simple in preparation process, is low in cost and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of optical glass, and in particular relates to a preparation method of titanium-containing high-niobium and low-lanthanum optical glass. Background technique [0002] Lanthanide optical glass is widely used in various optical instruments due to its high refractive index and low dispersion, such as digital cameras, digital video cameras, CDROMs, scanners and other digital optoelectronic products. The electronic shell structure of lanthanum is (Xe)5d 1 6S 2 , easy to lose 5d, 6s electrons after the electron layer distribution is inert, electronegativity is 1.2. Often La in optical glass 3+ Ionic interstitials are combined with oxygen by ionic bonds in the structural gaps of the boron-oxygen group, and the weaker lanthanum-oxygen bonds with lanthanum oxygen to fix a certain direction and changeable coordination relationship can even migrate together in its form; La 3+ for 4f 1 , and not easily polarize...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/068
Inventor 吴林海
Owner 湖北戈碧迦光电科技股份有限公司
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