Unlock instant, AI-driven research and patent intelligence for your innovation.

Production method for preparing high-purity niobium oxide by using high-antimony niobium liquid and the produced product

A production method and technology of niobium oxide, which are applied in the preparation of niobium compounds, chemical instruments and methods, niobium compounds, etc., can solve the problems of difficult control of impurity antimony and large content, and meet quality requirements, good economic benefits, and widened utilization. effect of value

Inactive Publication Date: 2016-08-24
JIUJIANG TANBRE
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high content of key impurity elements such as antimony in niobium-tantalite ore, it is difficult to control the impurity antimony in the production process. In the production of high-purity oxyniobium products, the content of antimony is mostly above 20ppm

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0030] 1. Adjustment processing

[0031] After analysis, it is known that the specific conditions of the niobium solution are: total acidity 5.3 n, of which sulfuric acid 2.4 n, hydrofluoric acid 2.9 n, containing nb to Nb 2 o 5 Total: 115.5 g / L, containing Sb: 17mg / L. According to the process requirements, through calculation, the total amount of oxides is controlled to be 4Kg, and the volume of the niobium solution added is 34.6L. 1.73g of ammonium sulfate needs to be added, and 2.26ml of ammonium sulfate saturated solution is taken (at 25°C, the concentration of ammonium sulfate saturated solution is 0.767g / ml) for standby. Put 34.6L of niobium solution into the adjustment treatment container, add 1ml of the saturated ammonium sulfate solution, stir thoroughly for 10 minutes, then add the remaining 1.26ml of the saturated ammonium sulfate solution, stir for 30 minutes, and adjust the reaction.

[0032] 2. Adjust acidity

[0033] Put the adjusted niobium solution into t...

Embodiment 2

[0046] 1. Adjustment processing

[0047] It is known from the analysis that the specific conditions of the niobium solution are: total acidity 5.2 N, including sulfuric acid 2.5 N, hydrofluoric acid 2.7 N, containing nb to Nb 2 o 5 Calculated as 117 g / l, containing Sb: 23 μg / ml. According to the process requirements, through calculation, the total amount of oxides is controlled to be 4Kg, the volume of niobium solution added is 34.2L, 1.71g of ammonium sulfate needs to be added, and 2.23ml of ammonium sulfate saturated solution is taken (at 25°C, the concentration of ammonium sulfate saturated solution is 0.767g / ml) for standby. Put 34.2L of niobium solution into the adjustment treatment container, add 1ml of the saturated ammonium sulfate solution, stir thoroughly for 10 minutes, then add the remaining 1.23ml of the saturated ammonium sulfate solution, stir for 30 minutes, and adjust the reaction.

[0048] 2. Adjust acidity

[0049] Put the adjusted niobium solution into...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Bronsted acidityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a production method for preparing high-purity niobium oxide by using a high-antimony niobium liquid and the produced product. The method comprises: step 1, adding saturated ammonium sulfate prepared into the high-antimony content niobium liquid, and carrying out Adjust the treatment to control the concentration of the niobium solution ≥ 70g / L, and the acidity ≥ 3N; step 2, adjust the adjusted niobium feed solution to adjust the total acidity to 13n; step 3, extract the niobium solution with adjusted acidity, and take the organic phase ; Step 4, carry out reverse niobium to organic phase, prepare pure niobium liquid; Step 5, neutralize precipitation to pure niobium liquid; Filter and obtain niobium hydroxide, dry, obtain niobium hydroxide powder; Step 6, calcining niobium hydroxide , the temperature is controlled at 900-1000°C to produce high-purity niobium oxide. For the niobium liquid prepared from minerals with high antimony content, the method of the present invention can be used to control the antimony content of high niobium products to ≤ 8.5ppm, thereby meeting the quality requirements of high-purity niobium oxide and producing better economical Benefits, greatly expanding the value of rare resources.

Description

technical field [0001] The invention belongs to the technical field of production of new rare metal materials, and in particular relates to a production technology for preparing high-purity niobium oxide from a high-antimony-niobium liquid and the produced product. Background technique [0002] High-purity niobium oxide is used for drawing LT (lithium niobate) single crystal for laser, micro-acoustic surface wave, information storage, optical fiber communication, infrared detection, and for special optical glass coating (improving optical performance) and making niobium-based Basic materials in high-tech fields such as superconductors and niobium-based catalysts, which have extremely high requirements for impurity elements. [0003] For a long time, high-purity niobium oxide has been produced using niobium concentrates as raw materials, and the chemical composition indicators in product standards are based on the use of niobium concentrates. Due to the small stock of key imp...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C01G33/00
CPCC01G33/003C01P2006/80
Inventor 梁昌明郭永忠张浩
Owner JIUJIANG TANBRE