Have you tried actually standing up to her when she does this?
I admit that this isn't something I would normally recommend so explicitly for a woman because the power dynamics are just different when the situation is reversed.
She sounds like a classic bitch to be honest. I don't know if this verges on emotional abuse - maybe it does, but I don't believe that every single bitch wife or fuckhead husband are automatically abusers. Sometimes they are just wankers.
If you do stand up to her when she does this, what do you say and how does she handle it? If you don't stand up for yourself, do you know why?
Sometimes people simply don't respect someone if they don't stand up for themselves - it's a very unattractive personality trait, but it exists nonetheless.
Have you tried discussing this at a time when you aren't arguing? And explaining that the way she speaks to you when angry is totally unacceptable? If not, that's the first step.
During an argument I'm obviously not recommending that you start screaming at her or threatening her (for the love of god don't do that), but there is no reason why you can't call her out in an assertive way.
"You are being totally unreasonable, and you do NOT get to talk to me like that. If you have a problem, TELL ME without turning into a foaming screaming harpy. If you are incapable of doing that and you want this marriage to continue, then we are going to counselling. Those are your two options - learn how to discuss problems like a fucking adult, or come to counselling. Your choice".
If she refuses to consider counselling and continues to blow up at you, then you might have to show her that you are serious by taking the kids and going to your parents for a few days. You should only take the children is you are the primary care giver though - that's the best interest of the child.
If you don't want confrontation, you don't want to leave and she continues to refuse counselling then I'm afraid you are out of options.
One other point - has it always always been like this, or is this a new development? If it's a recent thing it may well be that is resenting you for something, and is sub consciously using these situations to vent her frustration. It's obviously still an unacceptable thing to do, but if you can figure out if this is the case or not, then it might help to resolve the situation.
For example, did she have to give up work when the kids came along? Could she be resentful of that and be taking it out on you? Does she get help with the kids, or does the main burden fall on her? Does she get any time to herself without the kids?
Any of those things could be causing her to build up a huge amount of resentment at your perceived freedom.