Hematite production line and process solutions

Hematite production line and process solutions

I. Program Overview

This hematite production line solution provides a variety of flotation process routes for the beneficiation characteristics of hematite, including positive flotation, reverse flotation, positive-reverse flotation combined process and magnetic separation-flotation combined process. Through scientific and reasonable process design and optimization of the pharmaceutical system, the grade of iron ore concentrate can be increased to more than 65%, which can meet the demand for high quality iron ore concentrate in the iron and steel industry.

Second, hematite ore dressing process details

1. Positive flotation process

   • Process flow:

     • Grinding to -0.074mm accounted for 80% of the

     • pH adjustment to 9-11 (sodium carbonate)

     • Add fatty acid trapping agent

     • Roughing once, concentrating many times

   • Characteristics:

     • Simple process, lower cost

     • Applicable to single hematite

     • Concentrate grade generally ≤65%

2. Reverse flotation process

   • Anionic reverse flotation:

     • pH adjusted to above 11 (NaOH)

     • Calcium ion activation of quartz

     • Starch inhibition of iron minerals

     • Fatty acid-based trap flotation of quartz

   • Cationic counterflotation:

     • pH adjusted to 8-9 (Na₂CO₃)

     • Amine-based traps flotation quartz

     • Starch inhibits iron minerals

     • Concentrate grades up to 65-68

3. Combined positive-reverse flotation process

   • First positive flotation to obtain the crude concentrate

   • Then reverse flotation of the crude concentrate

   • Concentrate grade can reach 67% or more

   • Larger amount of chemicals, more complicated process

4. Combined magnetic separation-flotation process

   • Weak magnetic separation pre-enrichment

   • Reverse flotation to improve quality (pH=7, dodecylamine)

   • Concentrate grade can be up to 70

   • Recovery rate of 75% or more

5. Strong magnetic separation-flotation process

   • Strong magnetic separation tailing after rough grinding

   • Flotation after fine grinding

   • Suitable for ores containing easily slaked veinstones.

Third, hematite beneficiation production line core equipment configuration

Fourth, hematite ore dressing process flotation chemicals system recommendations

1. Adjusting agent:

   • pH adjustment: Na₂CO₃, NaOH

   • Activator: CaO (for anionic reverse flotation)

2. Inhibitors:

   • Starch, dextrin (to inhibit iron minerals)

   • Sulfonated lignin

3. Capture agent:

   • Positive flotation: oxidized paraffin soap, Thar oil

   • Reverse flotation: dodecylamine (cation), fatty acids (anion)

V. Advantageous features of hematite ore dressing process

1. High quality concentrate

   • Concentrate grade of reverse flotation process can be up to 65-70%.

   • Recovery rate of combined process can reach more than 75

2. Flexible choice

   • A variety of processes to adapt to different ore properties

   • Product index can be adjusted according to demand

3. Stable and reliable

   • High degree of automation control

   • Wear-resistant design of key equipment

4. Environmental protection design

   • Utilization rate of return water ≥90

   • Tailings dry discharge technology is optional

Sixth, technical services

1. Ore test

   • Hematite selectivity test

   • Pharmacy system optimization test

2. Program design

   • Hematite beneficiation process design

   • Hematite equipment selection and configuration

   • Economic Benefit Analysis

3. Production Support

   • Hematite equipment supply

   • Hematite production line equipment installation and commissioning

   • Operation Training

   • Process Optimization

Note: The specific process selection needs to be determined through the hematite ore selectivity test, this hematite beneficiation production line and process flow solution for the conventional configuration recommendations.