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Brazil
Cajati Mine

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 Location:
36 km SW from Registro, Brazil

  Address:
Av. Eng. Paulo Abib Andery do Cimento, km 03
Cajati
Brazil
11950-000
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
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  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Phosphate rock
  • Apatite
Mining Method
  • Truck & Shovel / Loader
Processing
  • Column flotation
  • Desliming
  • Flotation
Mine Life2033


Owners

Source: p. 4,18
CompanyInterestOwnership
The Mosaic Company 100 % Indirect
Mosaic Fertilizantes P&K S.A. (operator) 100 % Direct
Mosaic Fertilizantes segment owns and operates mines, chemical plants, crop nutrient blending and bagging facilities, port terminals and warehouses in Brazil and Paraguay, which produce and sell concentrated phosphates crop nutrients, phosphate-based animal feed ingredients and potash fertilizer.

Deposit Type

  • Carbonatite hosted


Summary:

The Cajati carbonatite-hosted apatite mine in southern Brazil recovers apatite from the world-famous Jacupiranga carbonatite. Calcite is recovered as a by-product from the tailings resulting from beneficiation of apatite, and is used in the cement industry. Mining at Cajati began in 1943 with the extraction of supergene ores with about 20% P2O5. 30 years later mining progressed into bedrock ores with 5% P2O5.

Carbonatite is younger than the abundant jacupirangite (nepheline-magnetite-titanaugite) in the open pit mine and where the two rocks are in contact the edges of jacupirangite breccia blocks are metasomatised to distinctly banded sodic fenites. Disseminated pyrrhotite and magnetite are common in the carbonatite.


Mining Methods

  • Truck & Shovel / Loader


Summary:

The phosphate ore is extracted by drilling and blasting, loaded by backhoe into trucks and transported to the processing plant.


Crushing and Grinding


Processing

  • Column flotation
  • Desliming
  • Flotation

Source: Subscription required

Summary:

The Brazilian phosphate industry has made great efforts to develop technology for the production of phosphates from slimes. The first industrial application was in the Araxá concentrator in the beginning of the 1980s, in a circuit consisting of desliming in 40 mm hydrocyclones and apatite flotation in column machines. This technology has been upgraded since 1984 by means of significant improvements in the desliming operation, concerning equipment and process control, utilization of a more adequate reagent system, and the use of flotation machines that provide improved performance and metallurgical yield. The concept of this process was still expanded to other Brazilian plants located in Catalão (Goiás state), Tapira (Minas Gerais state), and Cajati (São Paulo state) in the 1990s. It is estimated that the apatite concentrate from slimes represents 11% to 13% of the overall production. The apatite concentrate grade achieved from slimes are P2O5 at 33.0–35%; Fe2O3 at 3.0–6.5%; Al2O3 at 0. ........

Recoveries & Grades:

CommodityParameter202020192018
Phosphate rock Concentrate Grade, %  ......  Subscription required  ......  Subscription required34.6

Production:

CommodityUnits202020192018201620152014
Phosphate rock kt  ......  Subscription required  ......  Subscription required500477581605
All production numbers are expressed as concentrate.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202020192018
Annual production capacity  ......  Subscription required0.6 Mt of phosphate rock concentrate0.6 Mt of phosphate rock concentrate
Subscription required - Subscription is required.

Reserves at December 31, 2020:
The cut-off grade for mineral reserves is 3.0% P2O5.

CategoryTonnage CommodityGrade
Proven & Probable 68.2 Mt P2O5 5.1 %


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jul 16, 2021
....................... Subscription required ....................... Subscription required Subscription required Jul 16, 2021
....................... Subscription required ....................... Subscription required Subscription required Jul 16, 2021
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Form 10-K 2018
Form 20-F 2016
Form 20-F 2015
Other 2015
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Aerial view:

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