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Method for extracting lithium hydroxide from amblygonite through lime method

A technology of lithium hydroxide and lithium phosphate aluminum oxide, which is applied in the direction of lithium oxide; The effect of lowering the temperature

Inactive Publication Date: 2017-09-22
SHANTOU FANCY MINERAL RESOURCE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The Lithium Phosphorite we are going to study is a lithium mineral with the highest lithium content. Its pure mineral contains 10.1% lithium oxide, but it is not common in nature, and it is occasionally found on a small scale, and it has not been exploited as an industry. the value of

Method used

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  • Method for extracting lithium hydroxide from amblygonite through lime method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A kind of embodiment of the process of extracting lithium hydroxide from lithium phosphorite by lime method, concrete operation is as follows.

[0036] S1 Grinding of raw materials, grinding lithium phosphate ore and lime to 200 mesh respectively.

[0037] S2 ingredients, uniformly mix lithium phosphate and lime at a ratio of 1: 3.5 to form a raw material, add 200g lithium phosphate ore powder into a porcelain crucible, then add 700g lime powder into a porcelain crucible, and mix evenly by hand.

[0038] S3 roasting, high-temperature roasting of the raw material to form clinker, put the raw material into the muffle furnace, turn on the heating switch, set the maximum temperature to 1050°C, heat up, wait until the temperature in the furnace reaches 1050°C, and then continue the reaction for 20 Minutes, after the reaction time is up, turn off the heating switch and wait for it to cool to room temperature.

[0039] S4 leaching and filtering, firstly grind the clinker, gri...

Embodiment 2

[0045] A kind of embodiment of the process of extracting lithium hydroxide from lithium phosphorite by lime method, concrete operation is as follows.

[0046] S1 Grinding of raw materials, grinding lithium phosphate ore and lime to 180 mesh respectively.

[0047] S2 ingredients, uniformly mix lithium phosphate and lime at a ratio of 1: 3 to form a raw material, add 200g lithium phosphate ore powder into a porcelain crucible, then add 600g lime powder into a porcelain crucible, and mix evenly by hand.

[0048] S3 roasting, roasting the raw material at high temperature to form clinker, put the raw material into the muffle furnace, turn on the heating switch, set the maximum temperature to 1000°C, heat up, wait until the temperature in the furnace reaches 1000°C, and then continue the reaction for 30 Minutes, after the reaction time is up, turn off the heating switch and wait for it to cool to room temperature.

[0049] S4 leaching and filtration, firstly grind the clinker, grin...

Embodiment 3

[0055] A kind of lime method extracts the technology of lithium hydroxide from lithium phosphate aluminum, comprises the steps:

[0056] S1 Raw material grinding, grinding lithium phosphate ore, sodium sulfate and lime to 180 mesh respectively;

[0057] S2 ingredients, uniformly mix lithium phosphate, sodium sulfate and lime in a ratio of 1:0.2:1.5 to form a raw meal, take 500g lithium phosphate ore powder and add it to a porcelain crucible, then weigh 100 grams of sodium sulfate powder and 750 Add 1 gram of lime powder into a porcelain crucible and mix by hand;

[0058] S3 roasting, roasting the raw material at high temperature to form clinker, put the raw material into the muffle furnace, turn on the heating switch, set the maximum temperature to 1000°C, heat up, and wait for the temperature in the furnace to reach 1000°C, then continue the reaction for 30 Minutes, after the reaction time is up, turn off the heating switch and wait for it to cool to room temperature.

[00...

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Abstract

The invention discloses a method for extracting lithium hydroxide from amblygonite through a lime method. The method comprises S1 grinding raw materials to obtain powder of 100 to 200 meshes, S2 uniformly mixing the powder to obtain a raw material, S3 carrying out calcination at a high temperature to obtain clinker, S4 carrying out leaching and filtration to obtain a lithium hydroxide solution, S5 carrying out evaporation concentration to obtain a lithium hydroxide clear solution, and S6 carrying out crystallization to obtain lithium hydroxide crystals. The method extracts lithium from the unused raw material, expands a lithium extraction range, utilizes sodium sulfate based on the traditional lime method, improves a lithium precipitation degree, improves a lithium acquisition rate, reduces a raw material roasting temperature and realizes energy saving and emission reduction.

Description

technical field [0001] The invention belongs to the technical field of research and development of lithium extraction of lithium phosphoenite, and in particular relates to a process for extracting lithium hydroxide from lithium phosphoenite by a lime method. Background technique [0002] The industrial minerals of lithium on the earth mainly include the following types: [0003] . [0004] Among them, spodumene is the most famous, because spodumene is the most widely used lithium mineral because of its large-scale mineralization, simple composition, and mature lithium extraction process. Although lepidolite has a relatively large mineralization scale, due to its complex composition and complex lithium extraction process, it is less used for lithium extraction and is mainly used in the glass ceramic industry. Iron lepidolite, lepidolite, and petalite feldspar are scarcely distributed and the mineralization scale is small, so far there is no report on industrial applicatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01D15/02
CPCC01D15/02
Inventor 范兵彭秋华
Owner SHANTOU FANCY MINERAL RESOURCE CO LTD
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