WATER TREATMENT

Limestone is by far the lowest-cost acid neutralizer per unit of basicity and the most widely available. When complete or over-neutralization is required a limestone-lime treatment process can be employed.

Limestone is ideal for use in passive systems to treat acid mine drainage (AMD) due to the low cost of the raw material.
ANIMAL FEED

Limestone is an economical calcium source and vital ingredient in mineral feed supplements, which fortify organic feeds for farm animals and poultry. Calcium carbonates high levels of elemental calcium. Limestone grit in poultry gizzards assists with digestion and also provide calcium fortification to strengthen the egg shell.

Dolomite should not be used in chicken feed as excess magnesium might reduce egg output.
INDUSTRY

Limestone applied to pyro-metallurgical processes is called fluxstone. The use of limestone over lime depends on the smelting process and the cost of calcining the limestone as part of the process. A number of smelters use lime during the dry winter months when electricity is expensive and change over to limestone during the wet summer season. Limestone is easier to handle during the rainy season and the raw material cost benefit outweighs the extra electricity cost.
GLASS

The manufacture of glass is an excellent example of the complementary, interchangeable use of limestone and lime. Limestone is significantly cheaper than lime and a lot easier to handle and store.

The Fe content of the limestone is critical and must be manage with the Fe content of other raw material in the glass making process.
AGRICULTURE

A vast tonnage of limestone enters the agriculture fields as direct application to soil and as a filler for mixed fertilizer.

Liming neutralize soil acidity, is a direct source of nutrients, increase organic matter, increase soil micro-organisms and most importantly increase the efficiency of fertilizers.

Contact Information

Tel:	015 667 0536
Fax:	015 667 0539
E-mail:	[email protected]
	[email protected]

Product Analysis

Agricultural Lime Analysis (PDF)
Animal Feed Lime Analysis (PDF)

Map

INCA Mining on Google Maps

Uses of Lime

A commercially important property of lime is its ability to form solutions with silicates. When lime is heated with silica sand (SiO2) and sodium carbonate (Na2CO3), A solution is formed that does not crystallize when it is cooled. Instead, it hardens to an amorphous, clear, and nearly colorless solid; namely, glass.

Because it is a mixture and not a pure compound, glass does not have a distinct melting point; it gradually softens as it is heated. Therefore, it can be molded more efficiently.

INCA Mining

Mining and processing of limestone, dolomite and clay (attapulgite) in the Immerpan area, which is located 40km Southeast of Mokopane (approximately 230km North of Johannesburg) in the Limpopo Province of South Africa.

INCA Mining supplies limestone into the following markets:

Glass manufacturing as a low Fe content lime
Ferrochrome and other smelters
Agricultural market as agricultural lime
Fertilizer industry as a filler material
Animal feed as calcium source

Inca currently holds approved Mineral Leases and/or Mining Licenses with attendant E.I.As. and E.M.Ps over all its mineralised ground in the Immerpan area that totals in excess of 2,000 hectare.

Inca is conscious that its mining and related activities could potentially expose its employees, contractors, visitors and the local inhabitants to health and safety hazards. To address this issue Inca works strictly within especially the Mine Health and Safety Act (Act 29 of 1996)

Serving Agriculture since 1993

Inca Mining (Pty) LTD was incorporated in 1991 and commenced exploration of the carbonates and underlying clay around Immerpan in 1993.

In 1997 INCA commenced mining and processing limestone after the necessary permitting allowed the construction of a new crushing and screening plant. Sales of high quality limestone products average around 15,000t per month with adequate mining and processing facilities in place to accommodate market growth.

In 2008 PBD Holdings (Pty) Ltd purchased a 75% share in INCA Mining. Since the purchase capital investments were made to improve the quality of products as well as the production efficiency. Included in the investments is a new dryer plant as well as improved crushing and screening technology.

WATER TREATMENT

ANIMAL FEED

INDUSTRY

GLASS

AGRICULTURE

Contact Information

Product Analysis

Map

Uses of Lime

INCA Mining

Serving Agriculture since 1993