23.2 Chemical Raw Materials in Pakistan

Pakistan possesses a diverse range of chemical raw materials, including metallic ores, energy resources, industrial minerals, and valuable gemstones. These resources play a crucial role in the country's economy, with some being exported, while others remain largely unexploited despite significant reserves.

Metallic Ores

Pakistan's landscape is rich in various metallic ores, essential for industrial development.

• Iron Ore:

  • Estimated Reserves: Approximately $1.427$ billion tonnes.
  • Significance: A fundamental raw material for steel production.

• Chromite:

  • Status: Pakistan is an exporter of chromite.
  • Role: Chromite is the primary ore for chromium ($Cr$), which is used in alloys (e.g., stainless steel), plating, and pigments.

• Gold and Copper:

  • Location: Large reservoirs of both gold ($Au$) and copper ($Cu$) have been explored and estimated in Baluchistan (notably the Reko Diq and Saindak projects).
  • Status: Despite significant reserves, these deposits are currently largely unexploited.

Non-Metallic Minerals and Energy Resources

Beyond metallic ores, Pakistan has substantial reserves of non-metallic minerals and crucial energy resources.

• Natural Gas and Coal:

  • Location: Large reservoirs of natural gas are found in Sui, and coal deposits are extensive in Saindak and the Thar desert.
  • Coal Reserves: Estimated at $185$ billion tonnes.
  • Characteristic: The coal found in these regions is notable for its high sulfur content, which requires specific processing to mitigate environmental impact.
  • Industrial Use: Natural gas is a vital feedstock for the fertilizer industry (Ammonia/Urea production).

• Gypsum:

  • Estimated Reserves: Approximately $5.5$ billion tonnes.
  • Primary Use: Mainly utilized in cement manufacturing and as a soil conditioner in agriculture to treat sodic soils.

• Other Industrial Minerals:

  • Pakistan also possesses significant deposits of other vital minerals, including:
    • Limestone ($CaC{O}_3$): Used in cement, construction, glass making, and as a flux in metallurgy.
    • Rock Salt ($NaCl$): Found in the massive Khewra Salt Mines. It is essential for human consumption and the manufacture of Soda Ash ($N{a}_{2}C{O}_3$) and Caustic Soda ($NaOH$).
    • Marble and Granite: Valued as construction and decorative materials.

Gemstones

The North Eastern regions of Pakistan are renowned for their wealth of gemstones.

• Occurrence: These gemstones sometimes serve as ores for precious metals, though their primary value is in their aesthetic and ornamental use.
• Examples: The variety of gemstones includes:
  • Aquamarine
  • Tourmaline
  • Peridot
  • Emerald
  • Ruby
  • Topaz
  • Zircon
  • Rhodochrosite

Industrial Byproducts and Refineries

Pakistan's chemical landscape also relies on byproducts from existing industries.

• Sulfuric Acid ($H_{2}S{O}_4$): Often called the 'mother of industries', it is produced using imported sulfur or recovered from flue gases of metal smelters and oil refineries.
• Molasses: A byproduct of the sugar industry, used for the fermentation and production of industrial alcohol (Ethanol).
• Refinery Gases: During the refining of crude oil at facilities like Attock Refinery Limited (ARL) or Pakistan Refinery Limited (PRL), various hydrocarbon gases are recovered for chemical synthesis.