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Method for artificially synthesizing gem-class malachite

A technology of artificial synthesis and malachite, applied in chemical instruments and methods, copper compounds, inorganic chemistry, etc., can solve the problems that cannot be popularized and popularized, and achieve the effects of easy control of the preparation process, simple process, and low environmental pollution

Active Publication Date: 2015-04-15
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, although the chemical composition, color, texture, density, hardness, optical properties, and X-ray diffraction patterns of malachite synthesized by this method are very similar to natural gem-grade malachite, it is still not popularized so far.

Method used

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  • Method for artificially synthesizing gem-class malachite
  • Method for artificially synthesizing gem-class malachite
  • Method for artificially synthesizing gem-class malachite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Weigh 42g NaHCO 3 , Add 500 ml of deionized water to dissolve it and place it in a beaker as a salt solution for evaporation; put the polished copper-tin alloy suspended on the surface of the salt solution and seal the beaker; use a water bath to keep the beaker constant Keep warm, control temperature at 90 °C, keep constant temperature for 100 days, use the same concentration of NaHCO every day 3 The solution renews the salt solution in the beaker. In this example, the NaHCO used to renew the solution in the beaker 3 The solution is made up of 42g NaHCO 3 NaHCO with 500 ml deionized water 3 Solution; after the end, the sample should be removed and ultrasonically cleaned.

[0042] figure 1 An optical microscope photo of the malachite prepared in this example, it can be seen in the figure that the prepared malachite is opaque and dark green, with a striped pattern of shades similar to natural malachite, with a particle size of 5-20 mm , To meet the basic requirements as a ge...

Embodiment 2

[0044] Weigh 42g NaHCO 3 , Add 500 ml of deionized water to dissolve it and place it in a beaker as a salt solution for evaporation; put the polished copper-tin alloy suspended on the surface of the salt solution and seal the beaker; use a water bath to keep the beaker constant Keep warm and control the temperature at 90 °C; in the first stage of the reaction, that is, the first to 10 days, the same concentration of NaHCO is used every day 3 The solution renews the salt solution in the beaker. In this example, the NaHCO used to renew the solution in the beaker 3 The solution is made up of 42g NaHCO 3 NaHCO with 500 ml deionized water 3 Solution; In the second stage, the 11th-15th day, the same as the first stage, the same initial concentration of NaHCO is still used every day 3 The solution renews the salt solution in the beaker, but at the same time smear CuCl on the surface of the sample 2 Powder, smear 0.02 g per square centimeter on average, keep other reaction conditions unch...

Embodiment 3

[0047] Weigh 42g NaHCO 3 , Add 500 ml of deionized water to dissolve it and place it in a beaker as a salt solution for evaporation; place the polished metal copper suspended on the surface of the salt solution and seal the beaker; use a water bath to keep the beaker at constant temperature , Control the temperature to 90 °C, and use the same concentration of NaHCO every day in the first stage of the reaction, that is, the first to 10 days 3 The solution renews the salt solution in the beaker. In this example, the NaHCO used to renew the solution in the beaker 3 The solution is made up of 42g NaHCO 3 NaHCO with 500 ml deionized water 3 Solution; In the second stage, the 11th-15th day, the same as the first stage, the same initial concentration of NaHCO is still used every day 3 The solution renews the salt solution in the beaker, but at the same time smear CuCl on the surface of the sample 2 Powder, smear 0.05g per square centimeter on average, keep other reaction conditions uncha...

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Abstract

The invention discloses a method for artificially synthesizing gem-class malachite, and belongs to the technical field of artificial malachite crystal materials. The invention provides a novel saline liquid-steam synthesizing technology which is simple to control and suitable for industrial popularization. In excessive CO2 moist atmosphere, based on pure copper or copper and tin alloy as a substrate, high-purity malachite particles with a grain size of 5-20mm are produced. The gem-class malachite prepared can be used for rare jade carving materials, various jewelry jade materials, bonsai stones, ornamental stone and the like.

Description

Technical field [0001] The invention belongs to the field of artificial crystal material preparation, and particularly relates to a method for artificially synthesizing gem-grade malachite. Background technique [0002] At present, the malachite jade used in the jewelry industry is a single mineral rock, and the main component mineral is Malachite. Malachite, also known as basic copper carbonate, is an altered mineral containing copper and carbon salts. It belongs to the monoclinic system and its chemical formula is CuCO. 3 ?Cu(OH) 2 , Is an opaque dark green with a striped pattern of shades and shades. It is named after the green that resembles the spots on a peacock feather. Malachite is mainly produced in the oxidation zone of copper-bearing sulfide deposits. It is often used as a companion organism of copper ore. It is an epigenetic mineral formed after oxidation of primary copper-bearing minerals. It can be used as a sign for finding primary copper deposits. In nature, ma...

Claims

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Application Information

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IPC IPC(8): C01G3/00
Inventor 潘春旭李洋
Owner WUHAN UNIV
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