Production Cost Report | Energy, Metals and Minerals

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Zinc Production Cost Breakup from Mining

Details: Germany - based plant Q1 2024  | From $ USD

This report consists of a detailed cost analysis of Zinc. The production process of zinc involves various steps like mining, roasting, leaching & purification, electrolysis, and melting & casting.

Mining:

The earth's crust contains little amounts of zinc, which is the basis for everything. To several ports near our activities, Nyrstar collects and transports zinc concentrate from mines all over the world.  From there, trainloads of zinc concentrate are delivered to the positions and go through a four-stage roasting process, electrolysis, casting, leaching, and purifying.

Roasting:

A fluid bed roaster is fed with raw materials, including recycled zinc oxides and zinc concentrate from the steel industry.

Calcine is created in the roaster by burning raw zinc minerals with air. With a temperature of 950 degrees Celsius, calcine has a sand-like appearance. Full automation is used throughout the roasting process, and operators in a control room get continuously monitored.

Leaching & Purification:

Leaching is the technique used to dissolve the generated calcine in sulfuric acid. Lead, gold, silver dore, copper, cadmium, and cobalt are just a few of the other metals that we separate during this stage in order to create a very pure zine sulphate solution. The zinc sulphate solution thereafter moves on to the next step, which is the electrolysis process.

Electrolysis:

In the electrolysis section, a procedure known as electrowinning is used to deposit the zinc that is present in the solution onto aluminum cathodes. Electric current is used to accomplish this through the use of cathodes and anodes.

The zinc sheets are separated from the cathodes and transferred to casting once the cathodes have been taken out of the cells. In casting, cathode zine is transformed into blocks and ingots after being melted in furnaces.

The electrolysis step, which lasts just over 22 hours, is a remarkable procedure. Pure zinc is placed on aluminum plates using a lot of voltage. These plates are removed from the cells and contain only pure zinc. The zinc is removed by machines, and the empty plates are then brought back to the cells, where the procedure is repeated.

Melting & Casting:

The last phase involves remelting zinc and casting it into slabs, ingots, and blocks that weigh between 25 and 2500 kg. In addition, different alloying ingredients are included when casting certain alloys.

The project economic analysis provided in the report discusses a Germany-based plant and incorporates:

  • Manufacturing Process
    • Process Flow
    • Material Flow
    • Material Balance
  • Raw Material and Product's Specifications
    • Raw Material Consumption
    • Product and Co-Product Generation
    • Capital Investment
  • Land and Site Cost
    • Offsites/Civil Works
    • Equipment Cost
    • Auxiliary Equipment Cost
    • Contingency
    • Engineering and Consulting Charges
    • Working Capital
  • Variable Cost
    • Raw Material
    • Utilities
  • Fixed Cost
    • Labor Requirement & Wages
    • Overhead Expenses
    • Maintenance Charges
  • Financing Costs
    • Interest on Working Capital
    • Interest on Loans
  • Depreciation Charges
  • General Sales and Admin Costs
  • Production Cost Summary
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Report Content

Key Process Information

Evaluation of significant technical parameters along with process descriptions such as:

  • Consumption of Raw Material
  • Product Creation
  • Block Flow Diagram
  • Description of the Manufacturing Facility

Utilities Consumption

Evaluation of utilities consumed during the entire process based on:

  • Consumption per unit of product generated
  • Utility cost split and share of each utility in the total cost

Process Flow Diagram

Representation of various operations involved including:

  • Step-wise process
  • Utility consumption in each operation

Capital Cost Analysis

In-depth analysis of costs involved in setting up a new manufacturing unit, including:

  • Cost of Building a Process Unit
  • Cost of Setting Up the Infrastructure
  • Working Capital
  • Commissioning & Start-Up of the Plant

Implementation Schedule

Time frame of the project design, which includes:

  • Plant Start-Up
  • Plant Construction
  • Engineering Fundamentals
  • Raw Material Procurement

Construction Cost Details

Detailed analysis of costs involved in the operation of various functional units in the process unit and infrastructure.

Operating Cost Analysis

Evaluation of costs associated with the production of the final product, namely:

  • Procurement of Raw Materials
  • Consumption of Utilities
  • Fixed Costs
  • Depreciation

Economic Analysis

Analysis of the way in which process economics are impacted by plant capacity.

  • Construction Cost
  • Working Capital
  • Fixed and Variable Operating Costs
  • Corporate Overhead
  • Depreciation

Customized Analyses

Detailed cost estimates of any industrial plant depending on your requirements, including plant capacity and location as per the need.

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