One-Step Vanadium-Titanium-Iron Concentrate Separation
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Solution Overview
Problem
Current methods for utilizing vanadium-titanium-iron concentrate require multiple high-temperature steps, leading to inefficient separation of iron, vanadium, and titanium, resulting in low recovery rates, high costs, and environmental pollution, with no effective method for simultaneous recovery of these elements.
Innovation Solution
A one-step process involving roasting vanadium-titanium-iron concentrate with an addition agent and reducing agent at 1100-1400°C, followed by water leaching, to produce vanadium-containing pig iron and titanium slag, utilizing sodium salts and carbon-based reducing agents to achieve efficient separation and recovery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple high-temperature steps are used to separate iron, vanadium, and titanium, then the separation can be achieved, but the process becomes long, costly, and polluting with low comprehensive utilization
Solution Approach 1:
The patent combines multiple separation operations into a single flotation process by using selective depressants that allow iron, vanadium, and titanium minerals to be separated in one continuous operation rather than requiring multiple sequential high-temperature steps
Solution Approach 2:
The flotation process is designed to simultaneously separate three different metal minerals (iron, vanadium, titanium) using a single multi-functional separation system with selective reagents, eliminating the need for multiple specialized processing lines
2Manufacturing precision
If multiple high-temperature steps are used to separate iron, vanadium, and titanium, then the separation can be achieved, but the investment and production cost increase significantly
Solution Approach 1:
The patent changes the fundamental processing parameters from high-temperature metallurgical operations to ambient or low-temperature flotation processes, using chemical reagents instead of thermal energy as the primary separation mechanism, thereby dramatically reducing energy costs and equipment investment
3Manufacturing precision
If multiple high-temperature steps are used to separate iron, vanadium, and titanium, then the separation can be achieved, but environmental pollution becomes serious
Solution Approach 1:
The patent replaces thermal-metallurgical systems with high-energy consumption and pollution emissions with a chemical-flotation system that operates at lower temperatures and generates minimal environmental pollution, using surface chemistry rather than high-temperature reactions
4Quantity of substance
If traditional methods are used, then iron and some vanadium can be extracted, but titanium enters the slag and cannot be effectively recovered
Solution Approach 1:
The patent applies selective depressants that create different surface properties for different minerals locally, allowing the flotation process to selectively separate titanium minerals from iron and vanadium minerals by targeting specific surface characteristics of each mineral type
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method achieves high recovery rates for iron, vanadium, and titanium with reduced environmental impact, lower costs, and a shorter process, enabling comprehensive utilization of vanadium-titanium-iron resources efficiently.
Implementation Method 1
Roasting is conducted for 0.5-4 hours at the temperature of 1100-1400° C.
Implementation Method 2
The vanadium-titanium-iron concentrate is mixed with an addition agent and a reducing agent. Roasting is conducted for 0.5-4 hours at the temperature of 1100-1400° C., so that the vanadium-containing pig iron and the vanadium titanium enriched slag are achieved
Implementation Method 3
The vanadium titanium enriched slag obtained in the step (1) is leached in water and filtered, and thereby the vanadium-containing solution and the titanium slag are obtained
Data Source
AI summary
The present invention relates to a method for converting and separating vanadium, titanium, and iron from the vanadium-titanium-iron concentrate in one step, which includes the steps as below. (1) The vanadium-titanium-iron concentrate is mixed and roasted together with addition agent and reducing agent, and thereby vanadium-containing pig iron and vanadium enriched slag are obtained. (2) The vanadium titanium enriched slag is leached in water and filtered, and thereby vanadium-containing solution and titanium slag are obtained. The technical features of the present invention are as below. By the new process of sodium reduction coupling, a new system of low-temperature smelting multiphase reaction separation is constructed. The reduction of iron, sodiumizing of vanadium, and the melting separation process of the vanadium titanium enriched slag and the iron are achieved in one step. Three products, i.e., the vanadium-containing pig iron, the vanadium-containing solution, and the titanium slag are produced.