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Method for combined quantitative determination of metal oxides and hydroxides in ores

A technique for the quantitative determination of hydroxides, applied in measurement devices, particle and sedimentation analysis, material analysis using measurement of secondary emissions, etc. Provides quantitative minerals and other issues to achieve good resolution and accuracy

Active Publication Date: 2016-07-13
有研资源环境技术研究院(北京)有限公司
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Problems solved by technology

[0004] In view of the fact that the optical microscope method cannot provide quantitative mineral composition results, and the MLA system is difficult to accurately distinguish the problems of metal oxides and hydroxide minerals, the purpose of the present invention is to provide a joint quantitative determination of metal oxides and hydroxides in ores. method to make up for the deficiencies of the two methods and obtain accurate mineral quantitative data

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  • Method for combined quantitative determination of metal oxides and hydroxides in ores
  • Method for combined quantitative determination of metal oxides and hydroxides in ores
  • Method for combined quantitative determination of metal oxides and hydroxides in ores

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Embodiment 1

[0024] Various manganese oxides and hydroxides are common in manganese ore. Common manganese oxide and manganese hydroxide minerals include pyrolusite, coromanganite and hydromanganese, but these minerals show different characteristics under the optical microscope. Their optical characteristics are as follows:

[0025] Pyrolulurite (MnO 2 , Mn content 63.2%) belongs to the tetragonal crystal system, the reflectivity under white light is 30-41.5 (III level), the double reflection is remarkable, the reflection color is white with a light yellow hue, or light yellow (hematite), white (water Manganese ore), showing pleochroism (yellow-white or khaki, or cream yellow-off-white), no internal reflection, strong heterogeneity (off-white or light yellow-blue-green gray-brown red), often euhedral, Semi-euhedral columnar, needle columnar crystals.

[0026] Colemanite (mMnO 2 .MnO.nH 2 O, Mn content 49-62%) belongs to the monoclinic crystal system, the reflectivity under white light i...

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Abstract

The invention discloses a method for combined quantitative determination of metal oxides and hydroxides in ores. The method comprises the following steps: identifying all metal oxides and hydroxides in the ores under an optical microscope according to optical characteristics, calibrating positions of metal oxides and hydroxide minerals through adopting a conductive adhesive arrowhead indication technology, and collecting and naming all mineral standard samples by using an MLA system; adding the collected standard samples to an MLA system standard sample database, and sorting and naming a standard sample database; and analyzing and processing data through the MLA system to obtain the quantitative composition, the granularity and the dissociation degree of all minerals in an ore sample. The method combining the optical microscope with the MLA system has the advantages of satisfactory distinguishing of the metal oxide and hydroxide minerals, quantitative analysis, and very good resolution and accuracy.

Description

technical field [0001] The invention relates to a method for joint quantitative determination of mineral content in ore samples, in particular to a method for joint quantitative determination of metal oxides and hydroxides in ore. Background technique [0002] Conventional optical microscopy methods are able to distinguish between different metal oxide and hydroxide minerals by exploiting the differences in mineral optical features, but cannot provide results for quantitative mineral composition. [0003] The automatic mineral quantitative analysis system (MLA system) is composed of scanning electron microscope, energy spectrometer and automatic mineral quantitative analysis software. It provides a mineral quantitative analysis method and can distinguish various minerals in the ore by using the difference of X-Ray spectral peaks. For quantitative analysis, the system is based on the mineral X-Ray standard library. MLA provides manual and automatic standard sample collection ...

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Application Information

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IPC IPC(8): G01N15/02G01N21/00G01N23/22
Inventor 蔡镠璐刘爽屈伟周成英
Owner 有研资源环境技术研究院(北京)有限公司