CN1748832A

CN1748832A - Premagnetizing and filter concentration combining method for fine particle material containing magnetic iron

Info

Publication number: CN1748832A
Application number: CN 200410050393
Authority: CN
Inventors: 张才武
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-09-13
Filing date: 2004-09-13
Publication date: 2006-03-22

Abstract

The present invention belongs to the field of physical separation technology, is combined premagnetizing, filtering and concentrating process for ferromagnetic particle material, and aims at raising filtering and concentrating efficiency and solving relevant technological problems. Pre-magnetizers are set before or after filtering unit and/or concentrating unit, so as to raise the filtering and concentrating efficiency, lower water content, prolong the service life of filtering cloth and reduce the flow loss of filtrate and/or metal iron. The ferromagnetic particle material includes magnetic refined iron concentrate, converter slime, gas slime, etc.

Description

What contain ferromagnetic fine gives magnetic and filtering and concentrating combined method

Technical field: the magnetic that gives that contains ferromagnetic fine of the present invention belongs to the method and technology field that general physical is separated with the filtering and concentrating combined method.

Background technology: present filtering and concentrating flow process is generally: contain the slip → concentrated → filtration of ferromagnetic fine.For improving filter efficiency, before existing filtration operation, add filter aid, the filter aid needs are long-time to be stirred owing to add, and the problem of reagent cost, make filtration operation investment and operating cost higher, it is lower to solve productive rate fully, causes filter efficient lower, and treating capacity is lower when showing as the filtration board, moisture is higher, the filter cloth life cycle is short and the more problem of loss of metallic iron.

Summary of the invention: give magnetic and the filtering and concentrating combined method that contains ferromagnetic fine of the present invention is all to set up in the front of the front of filtration operation and concentrated operation to give chinaware; Perhaps all set up and give chinaware in the filtrate back of the front of filtration operation and filtration operation; Perhaps set up and give chinaware in the front of filtration operation; Perhaps set up and give chinaware in the filtrate back of filtration operation.The thin rank that contains ferromagnetic fine is reunited, this has been equivalent to increase the granularity that contains ferromagnetic fine, thereby, reach the purpose that improves filter and thickener efficient, promptly improve to filter, concentrating efficiency, when showing as the platform of filtrations, thickener treating capacity improve 2-20% and/or moisture reduces 1-5% and/or the filter cloth life cycle prolonged 2-5 days and minimizing filtrate and/or overflow in the loss 0.5-1.5% of metallic iron.

Of the present invention contain ferromagnetic fine give magnetic and filtering and concentrating combined method, also can be used in combination with filter aid.

Of the present invention contain ferromagnetic fine give magnetic and filtering and concentrating combined method alleged contain ferromagnetic fine, comprise Armco magnetic iron concentrate, revolving furnace mud and gas mud etc.

Description of drawings:

Fig. 1, all set up the principle process block diagram that gives chinaware in the front of filtration operation and the front of concentrated operation;

Fig. 2, all set up the principle process block diagram that gives chinaware in the front of filtration operation and the filtrate back of filtration operation;

Fig. 3, set up the principle process block diagram that gives chinaware in the front of filtration operation

Fig. 4, set up the principle process block diagram that gives chinaware in the filtrate back of filtration operation.

Specific implementation method:

The raising of and iron concentrate grade more and more thinner along with the disseminated grain size of iron ore makes the iron ore concentrate granularity be tapered, and especially is embodied in thin rank.For example: the iron concentrate grade of Qidashan iron ore brings up to 67.5% by 64.00%.Wherein: the productive rate of-12 μ m increases 10-18%, the productive rate of-10 μ m increases 5-15%, increasing of thin rank productive rate causes filter efficient to reduce, and the moisture of the reduction for the treatment of capacity, filter cake raises when showing as the filtration board, the filter cloth life cycle shortens and the loss of metallic iron is more.Below in conjunction with accompanying drawing, provide the implementation method of giving magnetic and filtering and concentrating combined method that magnetic and filtering and concentrating combined method specifically are applied to Armco magnetic iron concentrate ore pulp of giving that contains ferromagnetic fine with of the present invention:

Specific implementation method one:

Set up in the front of filter and to give chinaware (Fig. 1), filter given magnetic to the ore deposit; Set up in the front of thickener simultaneously and give chinaware (Fig. 1), the filtrate of filter and the ore deposit (iron ore concentrate ore pulp) of giving of thickener are given magnetic.

Specific implementation method two:

Set up in the front of filter and to give chinaware (Fig. 2), filter given magnetic to the ore deposit; Set up in the filtrate back of filtration operation simultaneously and give chinaware (Fig. 2), the filtrate of filter is given magnetic.

Specific implementation method three:

Set up in the front of filter and to give chinaware (Fig. 3), filter given magnetic to the ore deposit.

Specific implementation method four:

Set up in the filtrate back of filtration operation and to give chinaware (Fig. 4), the filtrate of filter is given magnetic.

Claims

1, a kind of contain ferromagnetic fine give magnetic and filtering and concentrating combined method, it is characterized in that all setting up and give chinaware in the front of the front of filtration operation and concentrated operation; Perhaps all set up and give chinaware in the filtrate back of the front of filtration operation and filtration operation; Perhaps set up and give chinaware in the front of filtration operation; Perhaps set up and give chinaware in the filtrate back of filtration operation.