Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for reclaiming molybdenum from aluminum-base molybdenum-containing waste slag

A technology based on waste slag and aluminum, which is applied in the field of molybdenum recovery, can solve problems such as waste and environmental pollution, and achieve the effects of convenient implementation, benefit to the environment, and favorable industrialization and application

Active Publication Date: 2008-03-26
山东铝业有限公司 +1
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of waste slag is piled up, which seriously pollutes the environment. At the same time, a large amount of Al in the waste slag 2 o 3 And some valuable metals, such as nickel, vanadium, molybdenum, cobalt, etc., are not utilized and are wasted

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The method for reclaiming molybdenum from aluminum-based molybdenum-containing waste slag of the present invention is carried out according to the following steps successively:

[0019] (1) Preparation of molybdenum-containing sodium aluminate crude liquid: combine aluminum-based molybdenum-containing waste residue with NaOH solution and Na 2 CO 3 After co-batching, enter the ball mill for mixing and grinding, and the ratio is controlled [Na 2 O] / {[Al 2 o 3 ]+[SiO 2 〕} The molar ratio is 1.1, and the grinding slurry is calcined in the rotary kiln to obtain clinker. 2 O1 3 5g / l, Al 2 o 3 12g / l, valuable metals aluminum and molybdenum dissolve into the solution together, and the solution undergoes solid-liquid separation to obtain sodium aluminate crude liquid containing sodium molybdate and red mud slag.

[0020] (2) The crude sodium aluminate liquid containing sodium molybdate enters the dissolution process of the Bayer process alumina production process, and is...

Embodiment 2

[0026] The method for reclaiming molybdenum from aluminum-based molybdenum-containing waste slag of the present invention is carried out according to the following steps successively:

[0027] (1) Preparation of molybdenum-containing sodium aluminate crude liquid: combine aluminum-based molybdenum-containing waste residue with NaOH solution and Na 2 CO 3 After co-batching, enter the ball mill for mixing and grinding, and the ratio is controlled [Na 2 O] / {[Al 2 o 3 ]+[SiO 2 〕} The molar ratio is 1.2. After the grinding slurry is calcined and dissolved, solid-liquid separation is carried out to obtain sodium aluminate crude liquid and red mud residue containing sodium molybdate.

[0028] (2) The sodium aluminate solution containing sodium molybdate enters the dissolution process of the Bayer process alumina production process, and is mixed with the raw ore pulp produced by the Bayer process alumina, so that the alumina in it can be recovered, and the molybdenum is produced b...

Embodiment 3

[0034] The method for reclaiming molybdenum from aluminum-based molybdenum-containing waste slag of the present invention is carried out according to the following steps successively:

[0035] (1) Preparation of molybdenum-containing sodium aluminate crude liquid: combine aluminum-based molybdenum-containing waste residue with NaOH solution and Na 2 CO 3 After co-batching, it is put into a ball mill for mixing and grinding. After the grinding slurry is calcined and dissolved, solid-liquid separation is carried out to obtain sodium aluminate crude liquid containing sodium molybdate and red mud slag.

[0036] (2) The sodium aluminate solution containing sodium molybdate enters the dissolution process of the Bayer process alumina production process, and is mixed with the raw ore pulp produced by the Bayer process alumina, so that the alumina in it can be recovered, and the molybdenum is produced by the Bayer process further enriched in the process.

[0037] (3) When the content...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The process of recovering Mo from Al-base Mo-containing slag includes the following steps: 1. preparing coarse aluminate liquid containing sodium molybdate through mixing Al-base Mo-containing slag with NaOH solution and Na2CO3, ball milling, calcining in a rotary kiln to obtain clinker, leaching the clinker with alkali correction liquor and solid-liquid separating to obtain coarse aluminate liquid containing sodium molybdate and red mud slag, and leaching the coarse aluminate liquid in a Bayer process production system; and 2. adsorbing Mo from the recycled liquor from the Bayer process production system with resin, eluting the adsorbed resin, desorbing with desorbing agent to obtain Mo-containing liquor, and adding calcium salt to form calcium molybdate precipitate. The process is simple, low in cost and environment friendly, and can recover Mo from waste.

Description

technical field [0001] The invention relates to a method for recovering molybdenum from aluminum-based molybdenum-containing waste residue, so that molybdenum resources can be effectively utilized. Background technique [0002] On the one hand, the consumption and output of my country's special steel industry have developed rapidly in recent years. Since the 1990s, my country's stainless steel consumption has grown rapidly at a rate of 26.9%. This directly leads to the increasing demand for molybdenum in my country. However, due to the drive of interests, the mining of molybdenum resources in my country is in a chaotic situation like other domestic mineral resources. Mining licenses are issued by local governments, and the mining of molybdenum mines lacks a unified plan; due to local protectionism, some collectives, individuals, and private mine owners disregard the interests of the state and do not mine within the scope of the plan or have not obtained legal mining licens...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C22B34/34C22B3/12C22B1/02C22B3/24C22B3/46
CPCY02P10/20
Inventor 卢家喜贾元平肖连生邓琦刘玮李芝顺王学文巩庆刚李青刚
Owner 山东铝业有限公司