What are the applications of grinding celestite with celestite grinding mill? What is celestite? Celestite is the most important strontium containing mineral in nature. Celestite is mainly used to process strontium carbonate and nitrate, of which more than 90% is used to produce strontium carbonate. There are many kinds of celestite minerals, and their tastes are different according to the content of SrSO4, although there is no unified standard for the content of SrSO4 used in the production of strontium carbonate .

Following Interim Provisions:


-200 mesh screen allowance ≤ 6.5% (- 80 mesh can also be considered);

Barium salt (BaSO4) < 4%;

Calcium salt (CaSO4) < 4%;

Impurities < 2%.

Each manufacturer has no unified requirements for the quality of ore, and the price is only based on the ore grade.

In addition, the specifications of celestite ore in the United States are: SrSO4 not less than 96%, CaSO4 not more than 0.5%, BaSO4 not more than 2%. The general range is that the content of SrSO4 is 94 ~ 97%.

Therefore, if you need to export celestite powder, you must use celestite grinding mill to grind celestite to 80-200 mesh. In addition to export, the mined celestite can meet the requirements of commercial celestite ore (containing more than 90% SrSO4) after simple first selection, and can be processed into blocks or ground into powder by celestite grinder.

Mineral composition of celestite:

(1) Marine clay carbonate sedimentary type

The ore mineral assemblage is celestite and carbonatite. SrSO4 up to 92%. The ore is massive, nodular, banded and radial.

(2) Marine and continental sulfate sedimentary types:

The ore mineral assemblage is celestite, calcite, dolomite, gypsum and heavy stone. SrsO455~90%,BasO40. 4~8%。 The ore is massive, banded and striped.

(3) Continental sulfate sedimentary type:

The ore mineral assemblage includes celestite and gypsum, including dolomite, clay rock, limestone and other impurities. The ore content is 0.46 ~ 11.53kg/m ‘, srso447 ~ 87%. The ore is nodular, massive, disseminated and laminated.

(4) Deposition – hot brine hydrothermal type:

The ore mineral assemblage is celestite, strontium siderite, calcite, quartz and a small amount of fluorite and pyrite. SrSO420~90%. BaSo4l~5%. The ore is massive, striped, banded and stockwork.

(5) Sulfide celestite mineral type:

Symbiosis with lead, silver, zinc, mercury and other minerals. It contains a small amount to about 50% celestite. The ore is massive, vein and disseminated.

(6) Volcanic rock hydrothermal type:

The mineral assemblage is celestite, kaolinite, quartz, hematite, strontium siderite, barite, fluorite and apatite. SrSO430~90%,BaSo42~6%. The ore is massive, cemented and disseminated.

(7) Supergene weathering leaching type:

The mineral assemblage is celestite, strontium siderite, barite and carbonate. SrSO410~-66%,BaSO40. 7~0.76%。 The ore is massive, cemented and crusty.

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